MRC_Hans
Penultimate Amazing
- Joined
- Aug 28, 2002
- Messages
- 24,961
Pixel,
- I claim that if relevant info is not used in estimating the prior probability of a hypothesis, it can be used as new info in estimating a posterior probability of the hypothesis. Do you disagree with that claim?
Psst, Jabba: The prior probability of ANY event is different from its posterior probability. This, however, is the probability of the event, not of the hypothesis describing the event.
E.G.:
I have a bucket of sand, and I'm going to dump it on the ground. The hypothesis is that this will result in a heap of sand on the ground.
The prior probability of ANY particular composition (positions of each grain of sand) of the expected heap of sand is 1/(some astronomical number). In other words, it is virtually unpredictable.
The posterior probability of the composition of the resulting heap of sand is, obviously, 1.
The hypothesis of your existence is not that YOU will exist. It is that on some planet, somewhere in some universe, a sentient being will exist who is ready to bicker about some nonsense for years on end. (That might seem slim, but the fact is we entertain at least three of the kind on this forum alone.)
That YOU happen to be one of them does not change the probability or the predictability of the hypothesis.
Hans