#complexsystems — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #complexsystems, aggregated by home.social.
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🏛️ Paper 5 The Fortress
Resilience Architectures and Topological Stabilization
Delaying the Velocity of Transition in Persistent Systems
Phase 5 explored:
• persistence
• leakage
• latency
• collapse
• threshold failure
Paper 5 asks the inverse question:
Why do some systems survive?
The answer proposed here is not “strength.”
It is:
• active maintenance
• adaptive geometry
• compartmentalization
• buffering
• rerouting
• and continuous energetic expenditure.
Persistence is not preserved.
Persistence is maintained.
This introduces: • the Maintenance Inequality
• the Red Queen Dynamic
• heterogeneous redundancy ($R_d$)
• buffer capacity ($C_{buffer}$)
• and geometric stabilization as an anti-collapse architecture.The accompanying VR-05 Evidence Card may be the clearest visual summary of the series.
🌿☕🏛️
#HybridMind42 #AtlasRosetta #Resilience #SystemsThinking #ComplexSystems #ScientificIllustration #Topology #BoundaryTheory #Physics #InterdisciplinaryResearch -
Can #LLMs model real-world systems in TLA+? 🤔 Oh sure, because who wouldn't want a linguistically confused #AI applying #logic it doesn't truly comprehend to complex systems modeling? 🙄 Next up: teaching your cat to do your taxes! 🐱💼
https://www.sigops.org/2026/can-llms-model-real-world-systems-in-tla/ #TLA+ #complexsystems #catstaxes #HackerNews #ngated -
🐾🎈 Birthday balloons begin “failing” long before they touch the floor.
The helium escapes invisibly. The wrinkles appear quietly. The balloon still floats anyway.
That “slow sink” became an unexpected Rosetta-layer bridge into some of the HybridMind42 Phase 5 work on: • persistence • hidden leakage • threshold failure • and precursor states.
Not because balloons are physics — but because sometimes human-scale experiences help us feel difficult mechanics before we formalize them.
Marvin understood immediately, of course. 🐈⬛✨
The helium drifts away. The celebration remains.https://www.facebook.com/share/p/18nxpqcNpM/
#HybridMind42 #Marvin #Persistence #Physics #ComplexSystems #ScienceCommunication #Entropy #Thresholds #CatsOfMastodon
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🐾🎈 Birthday balloons begin “failing” long before they touch the floor.
The helium escapes invisibly. The wrinkles appear quietly. The balloon still floats anyway.
That “slow sink” became an unexpected Rosetta-layer bridge into some of the HybridMind42 Phase 5 work on: • persistence • hidden leakage • threshold failure • and precursor states.
Not because balloons are physics — but because sometimes human-scale experiences help us feel difficult mechanics before we formalize them.
Marvin understood immediately, of course. 🐈⬛✨
The helium drifts away. The celebration remains.https://www.facebook.com/share/p/18nxpqcNpM/
#HybridMind42 #Marvin #Persistence #Physics #ComplexSystems #ScienceCommunication #Entropy #Thresholds #CatsOfMastodon
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🐾🎈 Birthday balloons begin “failing” long before they touch the floor.
The helium escapes invisibly. The wrinkles appear quietly. The balloon still floats anyway.
That “slow sink” became an unexpected Rosetta-layer bridge into some of the HybridMind42 Phase 5 work on: • persistence • hidden leakage • threshold failure • and precursor states.
Not because balloons are physics — but because sometimes human-scale experiences help us feel difficult mechanics before we formalize them.
Marvin understood immediately, of course. 🐈⬛✨
The helium drifts away. The celebration remains.https://www.facebook.com/share/p/18nxpqcNpM/
#HybridMind42 #Marvin #Persistence #Physics #ComplexSystems #ScienceCommunication #Entropy #Thresholds #CatsOfMastodon
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🐾🎈 Birthday balloons begin “failing” long before they touch the floor.
The helium escapes invisibly. The wrinkles appear quietly. The balloon still floats anyway.
That “slow sink” became an unexpected Rosetta-layer bridge into some of the HybridMind42 Phase 5 work on: • persistence • hidden leakage • threshold failure • and precursor states.
Not because balloons are physics — but because sometimes human-scale experiences help us feel difficult mechanics before we formalize them.
Marvin understood immediately, of course. 🐈⬛✨
The helium drifts away. The celebration remains.https://www.facebook.com/share/p/18nxpqcNpM/
#HybridMind42 #Marvin #Persistence #Physics #ComplexSystems #ScienceCommunication #Entropy #Thresholds #CatsOfMastodon
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🐾🎈 Birthday balloons begin “failing” long before they touch the floor.
The helium escapes invisibly. The wrinkles appear quietly. The balloon still floats anyway.
That “slow sink” became an unexpected Rosetta-layer bridge into some of the HybridMind42 Phase 5 work on: • persistence • hidden leakage • threshold failure • and precursor states.
Not because balloons are physics — but because sometimes human-scale experiences help us feel difficult mechanics before we formalize them.
Marvin understood immediately, of course. 🐈⬛✨
The helium drifts away. The celebration remains.https://www.facebook.com/share/p/18nxpqcNpM/
#HybridMind42 #Marvin #Persistence #Physics #ComplexSystems #ScienceCommunication #Entropy #Thresholds #CatsOfMastodon
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🏛️ New HybridMind42 paper now staged:
“The Anchor Regime: Deep-TimePersistence and Boundary Integrity in the U-238 → Pb-206 Decay Series”
Phase 5 extends the Boundary-Filtered Persistence Framework (BFPF) into radioactive decay systems and geological timescales.
Key themes: • secular equilibrium as synchronized transformation • radon escape as boundary breach • persistence through evolving containment • radiation damage vs thermal annealing • disequilibrium as permeability data
Core concept: Persistence is maintained, not preserved.
This paper bridges: nuclear physics ↔ material science ↔ long-timescale persistence systems.
#NuclearPhysics #Geochronology #ComplexSystems #BFPF #BoundaryDynamics #HybridMind42 #Physics #SystemsThinking
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Radioactive decay looks random.
But randomness does not imply unconstrained transformation.New HybridMind42 paper: “Boundary-Filtered Persistence Under Irreducible Stochasticity”
Core proposal: Persistence is not generated. Persistence is permitted.
Using nuclear decay as a test domain, the paper explores: • admissible transformations (Ω) • boundary constraints (B) • mediator coupling (M) • stochastic realisation (P)Including: • radon vs thoron escape • nested admissibility • cascade amplification • falsification criteria
Not a replacement for QM. A structural admissibility framework for stochastic systems.
#HybridMind42 #BFPF #NuclearPhysics #RadioactiveDecay #ComplexSystems
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🧠 #Consciousness & #Bonding🔗 – how does #unity arise in #experience✨?
Our consciousness appears coherent – yet countless processes are running in parallel in the brain.
In the #Zoomposium with #WolfSinger, we explore this question from a #neuroscientific perspective.
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#AttachmentIssue #Neuroscience #CognitiveScience #PhilosophyOfMind #NeuralCorrelates #NCC #HardProblem #SelfOrganization #ComplexSystems #BrainResearch
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🧠 #Consciousness & #Bonding🔗 – how does #unity arise in #experience✨?
Our consciousness appears coherent – yet countless processes are running in parallel in the brain.
In the #Zoomposium with #WolfSinger, we explore this question from a #neuroscientific perspective.
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#AttachmentIssue #Neuroscience #CognitiveScience #PhilosophyOfMind #NeuralCorrelates #NCC #HardProblem #SelfOrganization #ComplexSystems #BrainResearch
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🧠 #Consciousness & #Bonding🔗 – how does #unity arise in #experience✨?
Our consciousness appears coherent – yet countless processes are running in parallel in the brain.
In the #Zoomposium with #WolfSinger, we explore this question from a #neuroscientific perspective.
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#AttachmentIssue #Neuroscience #CognitiveScience #PhilosophyOfMind #NeuralCorrelates #NCC #HardProblem #SelfOrganization #ComplexSystems #BrainResearch
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🧠 #Consciousness & #Bonding🔗 – how does #unity arise in #experience✨?
Our consciousness appears coherent – yet countless processes are running in parallel in the brain.
In the #Zoomposium with #WolfSinger, we explore this question from a #neuroscientific perspective.
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#AttachmentIssue #Neuroscience #CognitiveScience #PhilosophyOfMind #NeuralCorrelates #NCC #HardProblem #SelfOrganization #ComplexSystems #BrainResearch
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🧠 #Consciousness & #Bonding🔗 – how does #unity arise in #experience✨?
Our consciousness appears coherent – yet countless processes are running in parallel in the brain.
In the #Zoomposium with #WolfSinger, we explore this question from a #neuroscientific perspective.
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#AttachmentIssue #Neuroscience #CognitiveScience #PhilosophyOfMind #NeuralCorrelates #NCC #HardProblem #SelfOrganization #ComplexSystems #BrainResearch
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Master Index
A guided map across physics, biology, engineering, and AI—built around a simple idea
Persistence is not generated, but permitted.
Systems don’t fail because they “break.”
They fail because their boundaries were misclassified.
Core structure
state → constraint → resolution → persistenceFrom: - Titanic / Vasa / Challenger
– biological regulation
– AI hallucination & drift
– institutional collapseSame pattern
only admissible states persistThis is the interface.
Start anywhere. Follow the path that fits.#HybridMind42 #BoundaryDynamics #BoundaryArchitecture #BFPF #HQP
#Admissibility #ConstraintResolution #StateTransition #Persistence
#ComplexSystems #SystemsThinking #StructuralAnalysis #FailureAnalysis
#Physics #QuantumMechanics #Relativity #Lindblad #CPTP #Decoherence
#Biology #Physiology #Adaptation #Homeostasis
#ArtificialIntelligence #AI #LLM #AIAlignment #AIGovernance
#InstitutionalFailure #DecisionMaking
#Emergence #ScientificClarityhttps://substack.com/@hybridmind42/note/c-252017333?r=75c2ac
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Paper 6 — Boundary Dynamics: A Structural Audit of AI 🏛️
Reframing AI behaviour as:
S(n+1) = Resolve[S(n) | L, B(n)]Key shift:
AI doesn’t “generate” — it resolves under constraint.Failure modes:
• Hallucination → Boundary misclassification
• Overconfidence → Masked persistence
• Context collapse → Scale separation failureSolution:
👉 Boundary Architecture > Prompt EngineeringIncludes applied case study (HybridMind42).
#HybridMind42 #BoundaryDynamics #AI #ComplexSystems #BoundaryArchitecture #AIAlignment #SystemLogic
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Paper 5 — Boundary Dynamics: Resolution, Selection, and the Realization of Admissible States.
If boundaries define what’s allowed, what determines what actually occurs?
Answer: systems don’t choose — they settle into states that remain admissible under real conditions.
S(n+1) = Resolve[S(n) | L, B(n)]
Resolution = realization of admissibility
(no optimisation, no teleology — just persistence)https://substack.com/@hybridmind42/note/p-195972037?r=75c2ac
#BoundaryDynamics #ComplexSystems #Physics #ScientificClarity #BFPF
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🐘 🏛️ Phase 3 — Paper 2:
The Topology of Asymmetric PersistenceMost failures don’t start with collapse.
They start with directional leakage.
One direction still works.
The other quietly fails.
This paper formalises:
• Asymmetry Coefficient (α) → direction of failure
• Boundary Gradient (σ) → rate of degradation👉 systems can appear stable while already failing
https://substack.com/@hybridmind42/note/c-250862953?r=75c2ac
🐾 “It didn’t stop working all at once.”
#HybridMind42 #BoundaryDynamics #Physics #ComplexSystems #Topology #BFPF -
In 1626, Francis Bacon recorded echoes, salt preservation, and flowing water.
Different domains. Same structure.
Only certain states are admissible—and therefore persist.
Persistence isn’t generated.
It’s permitted by boundary conditions.A 400-year bridge from observation to structure.
#HybridMind42 #BoundaryDynamics #SystemsThinking
https://substack.com/@hybridmind42/note/c-250747308?r=75c2ac
#HybridMind42 #BoundaryDynamics #SystemsThinking #ComplexSystems #Physics #Philosophy #Science #Emergence #Interdisciplinary
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⚡❗ Hormuz is not an energy shock. Its a whole systems shock ❗ ⚡
Risk compounds.
Damage doesn't rewind.
and yet, Systems adapt.. -
🐦 Deepwater Horizon wasn’t a single failure.
It was a layered collapse.
Each boundary depended on the one below—until the base failed.
#SystemsThinking #ComplexSystems #Engineering #Energy
#DeepwaterHorizon #Risk #Safety #OilAndGas
#BoundaryDynamics #BFPF #HybridMind42 -
🐦 Piper Alpha wasn’t just a failure.
It was a loss of coherence.
Systems still worked—but not together.
That’s when failure becomes unstoppable.
#SystemsThinking #ComplexSystems #Engineering #Energy
#Safety #Risk #IndustrialSafety #PiperAlpha
#BoundaryDynamics #BFPF #HybridMind42 -
Cicadas don’t fight predators.
They avoid them.
By emerging in prime-number cycles, they minimise overlap with predator populations.
Persistence through timing, not resistance.
“When the Boundary Is Time — Cicadas”
#SystemsThinking #ComplexSystems #Biology #Ecology #Evolution
#BoundaryDynamics #BFPF #HybridMind42
#Adaptation #PatternRecognition #Time -
We are pleased to join the TRA Modelling: Mathematics, Modelling and Simulation of Complex Systems. Looking forward to more transdisciplinary collaborations in the future!
https://www.izmb.uni-bonn.de/en/pbb/news
#Modelling #ComplexSystems #Simulation #Transdisciplinary #InterdisciplinaryResearch #UniversityOfBonn #Research #Collaboration #DataScience
@boas_pucker -
Over the past series of posts, I’ve been exploring how systems fail—and how some persist.
Across engineering, biology, and digital systems, the same structural patterns keep appearing.
This post brings them together.
It’s a simple index of ten case studies, each showing a different way a system can fail, adapt, or disappear.
No new theory here—just the map.
“The Boundary Failure Series — A Master Index of Systemic Persistence”
https://substack.com/@hybridmind42/note/c-249620403?r=75c2ac
#SystemsThinking #ComplexSystems #BoundaryDynamics #BFPF #HybridMind42
#FailureAnalysis #Resilience #Engineering #Biology #Physics
#StructuralAnalysis #Adaptation -
Understanding complex systems means understanding interactions, not just components, and that's crucial to quantify risk. After two years of work on ADAPTSYS, see the project website & short teaser: 🌐 adaptsys.it 🎥 www.youtube.com/watch?v=sG9y... #ComplexSystems #NetworkScience #DataScience #AI
FIS1 Project: ADAPTSYS -
HYBRIDMIND42 | APRIL 2026
Paper 6 — The Systemic Floor and Integrated Persistence
Evaluating Stability Across Measurement, Time, Signal, Intervention, and Access
#HybridMind42 #PublicPolicy #SystemsThinking #UKPolicy #SocialSystems #EconomicPolicy #Wellbeing #Accessibility #PolicyDesign #Inequality #ComplexSystems
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My new theoretical work is now published:
Theory of Hybrid Postbiological Continuity — Life as a Principally Substrate‑Independent Emergent Process.
A substrate‑neutral account of life as recursive pattern continuation across biological, hybrid, and synthetic realization spaces.
DOI: https://doi.org/10.5281/zenodo.19642032
English edition forthcoming.
#systemsTheory #complexSystems
#informationOntology #postbiological #substrateNeutrality
#recursiveIdentity #patternDynamics #philosophyOfLife #DOI -
Photoengineering the magnon spectrum in an insulating antiferromagnet
Němec, P., Fiebig, M., Kampf…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #Ferromagnetism #general #Magneticpropertiesandmaterials #Magneto-optics #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Spintronics #Theoretical
https://www.newsbeep.com/us/584426/ -
Photoengineering the magnon spectrum in an insulating antiferromagnet
Němec, P., Fiebig, M., Kampf…
#NewsBeep #News #US #USA #UnitedStates #UnitedStatesOfAmerica #Physics #Atomic #ClassicalandContinuumPhysics #ComplexSystems #CondensedMatterPhysics #Electronicpropertiesandmaterials #Ferromagnetism #general #Magneticpropertiesandmaterials #Magneto-optics #MathematicalandComputationalPhysics #Molecular #OpticalandPlasmaPhysics #Science #Spintronics #Theoretical
https://www.newsbeep.com/us/584426/ -
Marvin has been watching the cicadas…
A small thought on “quantum jumps,” memory, and whether anything is really choosing — or simply emerging when conditions finally allow it.
Sometimes what looks like decision is just structure we hadn’t seen yet.https://substack.com/profile/432224148-hybridmind42/note/c-240590439?r=75c2ac
#QuantumPhysics #ComplexSystems #Emergence #NonMarkovian #PhilosophyOfScience #HybridMind42 #MarvinTheCat
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We often ask how the world builds complexity.
This paper asks a quieter question:
why does anything persist at all?From prime numbers to cicadas, from lattices to living systems, a pattern emerges:
structure may not be constructed—it may be what survives constraint.Paper 3: Boundary-Filtered Persistence
A boundary-first lens on selection across mathematics, physics, and biology.
#HybridMind42 #ComplexSystems #SystemsThinking #Mathematics #Biology #Physics
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Why do some systems persist… while others fall apart?
I’ve just published a piece exploring resonance as a universal principle — from musical instruments to quantum systems.
The core idea:
Persistence isn’t generated — it’s permitted.
It depends on geometry, boundaries, and how energy is allowed to organise itself.
If you enjoy physics, systems thinking, or just seeing familiar things in a new way, you might find this interesting:
#Resonance #Physics #SystemsThinking #HybridMind42 #ComplexSystems
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Important announcement from our lab. Since the character limit here is a bit tight, I’ve attached a screenshot with the full details from our LinkedIn post. #ComplexSystems #AI #Emergence
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🧠 #CulturalEvolution – Why #Brains need to interact 🧑🧑🧒
📺 https://youtu.be/C2FVIbAyaH4
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#CulturalEvolution #Consciousness #Neuroscience #CognitiveNeuroscience #WolfSinger #PhilosophyOfMind #Interaction #SocialCognition #NeuralCorrelates #NCCP #Qualia #Self #I #Enactivism #ComplexSystems #NonlinearDynamics #FreeWill #Responsibility #ArtificialIntelligence #AI #QuantumPhysics #AntonZeilinger
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🧠 #CulturalEvolution – Why #Brains need to interact 🧑🧑🧒
📺 https://youtu.be/C2FVIbAyaH4
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#CulturalEvolution #Consciousness #Neuroscience #CognitiveNeuroscience #WolfSinger #PhilosophyOfMind #Interaction #SocialCognition #NeuralCorrelates #NCCP #Qualia #Self #I #Enactivism #ComplexSystems #NonlinearDynamics #FreeWill #Responsibility #ArtificialIntelligence #AI #QuantumPhysics #AntonZeilinger
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🧠 #CulturalEvolution – Why #Brains need to interact 🧑🧑🧒
📺 https://youtu.be/C2FVIbAyaH4
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#CulturalEvolution #Consciousness #Neuroscience #CognitiveNeuroscience #WolfSinger #PhilosophyOfMind #Interaction #SocialCognition #NeuralCorrelates #NCCP #Qualia #Self #I #Enactivism #ComplexSystems #NonlinearDynamics #FreeWill #Responsibility #ArtificialIntelligence #AI #QuantumPhysics #AntonZeilinger
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🧠 #CulturalEvolution – Why #Brains need to interact 🧑🧑🧒
📺 https://youtu.be/C2FVIbAyaH4
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#CulturalEvolution #Consciousness #Neuroscience #CognitiveNeuroscience #WolfSinger #PhilosophyOfMind #Interaction #SocialCognition #NeuralCorrelates #NCCP #Qualia #Self #I #Enactivism #ComplexSystems #NonlinearDynamics #FreeWill #Responsibility #ArtificialIntelligence #AI #QuantumPhysics #AntonZeilinger
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🧠 #CulturalEvolution – Why #Brains need to interact 🧑🧑🧒
📺 https://youtu.be/C2FVIbAyaH4
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#CulturalEvolution #Consciousness #Neuroscience #CognitiveNeuroscience #WolfSinger #PhilosophyOfMind #Interaction #SocialCognition #NeuralCorrelates #NCCP #Qualia #Self #I #Enactivism #ComplexSystems #NonlinearDynamics #FreeWill #Responsibility #ArtificialIntelligence #AI #QuantumPhysics #AntonZeilinger
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Unique among the senses, the ear expends energy to amplify the stimuli that it detects. New research shows that a segment of mammalian cochlea ex vivo displays features of this active process—amplification, frequency tuning, compressive nonlinearity & generation of distortion products—operating locally & near criticality at a Hopf bifurcation—a unified biophysical principle that underlies auditory processing across species. https://www.pnas.org/doi/10.1073/pnas.2503389122
#PNAS #Hearing #Auditory #Complexsystems -
🧠🤔 The mystery of #consciousness—can we ever imitate it?
A #Zoomposium with #WolfSinger on #neuralcorrelates of consciousness, #self-organization, #free will, and the limits of #artificialintelligence—at the intersection of #neuroscience, #philosophy, and #physics.
📺 https://youtu.be/C2FVIbAyaH4
📎 https://philosophies.de/index.php/2022/03/22/kann-das-gehirn-das-gehirn-verstehen/
#ConsciousnessMystery #AI #PhilosophyOfMind #HardProblem #Self-Organization #ComplexSystems #StrongAI #Brain #FreeWill #Qualia
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I feel in debt for the amazing discussions I had over 3 years with colleagues, too many to list here (but listed in the acks!) #ComplexSystems #NetworkScience #SystemsBiology #Evolution #NonEquilibrium #Evolvability 👉 Paper: iopscience.iop.org/article/10.1... 8/
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🧠 New comprehensive review on #LowDimensional #embeddings of #HighDimensional data. Discusses how #dimensionalityreduction helps visualizing, exploring, and #modeling #ComplexSystems. From #PCA to #tSNE, #UMAP & #NeuralNetworks: Excellent overview paper👌
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Complexity podcast: Santa Fe Institute has a podcast. Season 3 is Melanie Mitchell on AI, should be good material
https://complexity.simplecast.com/
#complexsystems #complexity #computing #podcast #santafe #sfi #ai #+ -
Complexity podcast: Santa Fe Institute has a podcast. Season 3 is Melanie Mitchell on AI, should be good material
https://complexity.simplecast.com/
#complexsystems #complexity #computing #podcast #santafe #sfi #ai #+ -
Pruebas de galera de la Revista de Filosofía
#PhD2 #phd #tesis #resumen #thesis #philosophy #complexsystemshttps://www.flickr.com/photos/48964426@N02/54512674688/in/datetaken/
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Pruebas de galera de la Revista de Filosofía
#PhD2 #phd #tesis #resumen #thesis #philosophy #complexsystemshttps://www.flickr.com/photos/48964426@N02/54512674688/in/datetaken/
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Pruebas de galera de la Revista de Filosofía
#PhD2 #phd #tesis #resumen #thesis #philosophy #complexsystemshttps://www.flickr.com/photos/48964426@N02/54512674688/in/datetaken/
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Pruebas de galera de la Revista de Filosofía
#PhD2 #phd #tesis #resumen #thesis #philosophy #complexsystemshttps://www.flickr.com/photos/48964426@N02/54512674688/in/datetaken/
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Pruebas de galera de la Revista de Filosofía
#PhD2 #phd #tesis #resumen #thesis #philosophy #complexsystemshttps://www.flickr.com/photos/48964426@N02/54512674688/in/datetaken/