What Time Really Is
Modern physics treats time as part of spacetime: measured durations can differ with relative motion and gravity. Thermodynamics adds an arrow associated with irreversible macroscopic…
Time, entropy, causality, explanation and the limits of systems metaphors.
Modern physics treats time as part of spacetime: measured durations can differ with relative motion and gravity. Thermodynamics adds an arrow associated with irreversible macroscopic…
From Hume's skepticism about directly perceiving causation to modern experimental and statistical methods, causal reasoning became a formal problem about interventions and…
Thermodynamic entropy is a state quantity associated with macroscopic processes; statistical mechanics connects it to the multiplicity of microscopic arrangements compatible with a macrostate. The familiar word disorder…
Clausius introduced thermodynamic entropy; Boltzmann connected macroscopic behavior to statistics over microscopic…
Physics measures relations among events, while human experience adds memory, anticipation and a felt flow of…
Network clock skew is an implementation limitation. Relativistic time differences are features of physical law, not synchronization…
Causality is partly about what happened and partly about what would differ under a…
Incident analysis teaches causal humility: engineers distinguish a trigger, latent conditions, contributing factors and structural weaknesses instead of searching for one…
Newtonian absolute time provided a successful framework until relativity replaced it with a spacetime in which simultaneity depends on the observer's state of…
Distributed computing is a modest intuition pump because engineers know how dangerous it is to assume one globally shared clock or one unquestionable event…
Entropy links microscopic laws to the macroscopic arrow of time and forces us to ask why some directions of change are overwhelmingly more…
Nature does not provide a canonical distributed trace with every causal edge labeled. The causal model depends on the question, intervention and level of…
Engineering benefits from tracking constraints, energy availability and irreversible processes rather than treating entropy as a metaphor for…
A messy room is not automatically a high-entropy thermodynamic system. Information-theoretic and thermodynamic entropy have deep connections but are not interchangeable in every…
Real causal systems can contain multiple necessary conditions, feedback, common causes, probabilistic effects and interactions. Correlation alone does not identify which intervention would change an…