Recent content by N123

I found a couple of closed threads related to the definition of randomness, but my question is slightly different. Is there a mathematical way to express the fact that randomness is the eye of the beholder? For example, if I give a sequence of 1000 numbers such that you cannot predict the...

WWGD - that is not my question. I know that AND, OR, NOT can be expressed in terms of NAND (Sheffer stroke.) Also, just using NOR.

It's a little more than that. The Monte Hall problem was just an example. I almost regret giving it. The idea is to mix up random and "non-random" (intentional) events. Intent / free will is a bit controversial, so let's say "events with unpredictable probability distribution." Dalespam...

Consider this variation of a well-known problem. As a contestant on a game show, you choose one of three doors. One door has a prize behind it, the other two have nothing. The host knows which one has the prize. The host opens a door and reveals what is behind it. If it has nothing, should you...

Clever! I am almost ready to buy it. What do you mean by atomic sentences? Are B, C etc propositions or are they literals? Not sure yet if it matters, but if A, B, C are themselves composed of other "variables" X, Y, Z then their truth values may not be independent. But then again, they are...

It is possible to express the boolean AND in terms of boolean OR and boolean NOT: a AND b <=> NOT (NOT a OR NOT b) Similarly, a OR b <=> NOT (NOT a AND NOT b) Why can't we express NOT in terms of OR and AND?

2. Thank you for pointing me to the "tired light" theories. 3. Which characteristic?

I am confused by this whole thread. I have only a superficial knowledge, so probably nothing fundamental. 1. how do you know things are moving away from each other when there is no constant scale? (Any physical scale itself would expand, would it not?) 2. If it is red-shift, how do you know...

Hello all, I am an engineer, curious about physics, math and philosophy. Ancient (over 40) but the mind still functions somewhat. I don't recall how I stumbled upon these fora but based on a preliminary perusal, they appear to not be a total waste of time. (That's high praise from a...