Event-Based Approach
Executive Summary
- Event-based systems react to events, not timers or sequential code execution, thus saving energy, time, and memory.
- But time is also defined by events—without events, time itself has no meaning.
- Optimal systems integrate event-based and time-based approaches—balancing efficiency with long-term resiliency to errors and inherent uncertainty.
- Saturation mechanisms prevent failure by enforcing periodic system changes, even when event-based triggers fail.
Event-Based Approach: Core Principles
- Event-based logic is not just a technical choice—it is a foundational ideology that shapes both hardware and software architecture.
- In intelligent systems, event-driven decision-making applies to both physical actions (in-body) and cognitive processes (in-mind).
Time as an Event-Driven Concept
Time is not an absolute entity but a sequence of events.
- If nothing happens, the system should only store the start and end timestamps of the inactivity.
- This aligns with natural perception—we measure time between events, not in continuous increments.
Events define time itself:
- A second is an arbitrarily defined unit—9,192,631,770 oscillations of a cesium atom.
- We assume these oscillations are stable, but we have no deeper reference to verify time’s absolute nature.
- Intelligence extrapolates time from event patterns, not from an independent inner mind “clock.”
Time perception is event-driven:
- A cat learns that its owner arriving home signals mealtime, using it as a time reference.
- If the owner returns earlier, the cat misinterprets the event as the end of a full day, relying on past patterns rather than absolute time.
- Humans make similar cognitive errors when assuming standardized time measurement is inherently correct without deeper verification.
Memory and Event-Based Data Processing
Redundant static data should not be stored or processed.
- If a robot stares at a white wall, storing 100 frames per second is meaningless.
- Memory should act like keyframe-based video compression, recording only meaningful changes.
Repeated experiences should condense into high-level knowledge.
- If a robot navigates the same warehouse path 100 times with no new obstacles,
- The full event history is unnecessary.
- Only new deviations matter—otherwise, the system simply increments a success counter.
- If a robot navigates the same warehouse path 100 times with no new obstacles,
Event-driven memory is hierarchical:
- On a small scale, minor variations exist.
- On a larger scale, events smooth out into patterns—when nothing significant happens, the derivative of change is zero.
- This ties into layered system design, where information is processed at different abstraction levels.
Event-Based vs. Time-Based Processing
Event-Based | Time-Based |
---|---|
Triggered by system changes – mostly, on external inputs | Runs at fixed time intervals |
More efficient, reacts only when necessary | Ensures periodic updates even without new events |
Adapts dynamically | Prevents failure in case of missing events |
All systems in our Universe are fundamentally event-based.
- Even time itself – seconds in SI – is an arbitrarily defined sequence of events.
- However, purely event-driven systems can fail when sensors miss events or fail to trigger.
Optimal systems balance event-driven logic with periodic saturation resets.
- Event-based processing ensures efficiency—acting only when necessary.
- Time-based fallbacks prevent event-detection failures from leading to catastrophic errors.
Example: The Pipe Clogging Sensor
A clog detector reports that the pipeline is clear.
- If it fails silently, an event-based system may never detect the clog.
- A pure event-driven system is vulnerable to such sensor failures.
A hybrid approach prevents this issue:
- The event-based system waits for a clog-detection event.
- A time-based backup rule enforces scheduled maintenance every 50 years.
- This prevents catastrophic failure, even if no event occurs.
The principle of saturation applies here:
- Over time, the probability of pipeline failure increases.
- The expected damage from failure eventually outweighs the benefits of delaying maintenance.
- Even if the system “could” wait longer, the cost of waiting rises, making replacement the rational choice.
Conclusion
- Event-based processing is fundamental to intelligent system design.
- Time is a byproduct of events—intelligence perceives time only through changes.
- Memory should store only meaningful changes, not redundant data.
- Layered system design allows hierarchical event abstraction, optimizing decision-making.
- Event-based and time-based approaches should be integrated to balance efficiency with long-term system stability and resilience to errors and enthropy in general.