<br><br><div><span class="gmail_quote">On 18/06/07, <b class="gmail_sendername">Lee Corbin</b> <<a href="mailto:lcorbin@rawbw.com">lcorbin@rawbw.com</a>> wrote:<br><br></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
I have believed for many decades that almost every time that<br>probability is invoked in identity threads, it is misused. For<br>example, suppose that you are to walk into Black Box A<br>wherein 999 duplicates of you are to be made. After the
<br>duplicates are created, only one of you---picked at random---<br>is allowed to survive. Many might suppose that the chances<br>of surviving Black Box A is only 1/1000. But of course, that's<br>incorrect. The chance that you will walk out is exactly 1.
<br><br>Suppose that I know that ten seconds from now a million<br>copies of me will be made, all the new copies somewhere<br>on the seashore. Then yes, I will be surprised to still be<br>here. That is, the one of me who is not at the seashore
<br>will be surprised. But our feelings of surprise, anticipation,<br>and so on, cannot so far as I know be reduced to a rational<br>basis.</blockquote><div><br>Why? It all seems quite reasonable to me. I should be as surprised to find myself in my room as I should be to find myself winning the lottery.
<br></div><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">> I mention this to show that the question of what it feels like to have<br>
> a lot of copies of yourself - what kind of subjective outcome to<br>> predict when you, yourself, run the experiment - is not at all<br>> obvious.<br><br>Not only would I agree, but I go on to assert that our normal,
<br>daily, usual feelings of anticipation, dread, surprise, apprehesion,<br>and other feelings of subjective probability having to do with identity<br>cannot be put upon an entirely rational basis.<br></blockquote></div><br>
You can describe objective reality in a completely consistent, unequivocal, uncontested way, but feelings of anticipation etc. do not always comport with this objective reality. Nevertheless, feelings are important; to a human, perhaps the most important thing.
<br><br clear="all"><br>-- <br>Stathis Papaioannou