3 ms·
Actually, a state is when a measurable attribute of an object remains unchanged for a period of time. So saying state = time completely misses what a state is.
by gibsonf1 2y ago
Actually, a state is when a measurable attribute of an object remains unchanged for a period of time. So saying state = time completely misses what a state is.
- DougN7 2y agoI like this definition more. The other way is basically to redefine the meaning of the word “time” to something more akin to “sequence”.
- vehemenz 2y agoThis is a better explanation, but can't the state be measured at any time, unchanged or not? The measurable attribute could always be in flux, for example.
- gibsonf1 2y agoYes, basically as long as you keep measuring the object with a function (like length or weight etc) and the result of the measurement does not change, the state has not changed. When the result changes, its a new state.
- BigParm 2y agoOP should have said that change in state = time. Anyone who has worked on secure consensus has had the same thought. You can't derive time from pure math. You must observe some state change. It's a useful concept, but strictly speaking it's not true. If this universe was completely devoid of matter, time would still pass. "If a tree falls in the woods and nobody is around to hear it, does it make a sound?"
- gibsonf1 2y agoHmm, I would not say that a change in state = time, but that a state changes at some point in time where the state is current for the period of time (start to end) in which some measurable attribute of an object does not change. The standard for measuring time is based on planetary movement etc, so its really all about observing change as it happens, and the sequence of those changes. If the universe was devoid of matter, it would mean there would be no us. And since time is a human concept, that concept would not exist :)