Tetronian comments on You're in Newcomb's Box - LessWrong

40 Post author: HonoreDB 05 February 2011 08:46PM

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Comment author: wedrifid 01 February 2011 08:37:44AM 11 points [-]

Q: Why does this knife have a handle?
A: This allows you to grasp it without cutting yourself.

These kinds of answers are highly compelling, but strictly speaking they are allowing events in the future to influence events in the past.

No, they aren't. They are answering the question according to the standard meaning conveyed with "Why?". When we use the word 'why' we mean a variety of things along the lines of 'What purpose does this serve?' as well as sometimes 'Explain the series of events that lead up to the final state in a convenient way'.

In standard usage if someone answers 'so you don't cut yourself' they usually are not talking about anything to do with temporal relations one way or the other.

Comment author: [deleted] 01 February 2011 04:29:43PM *  5 points [-]

Agreed. Maybe a better way to phrase it would be:

Q: Why does this knife have a handle?

A: Because it was designed so that you can grasp it without cutting yourself.

This fully answers the question and doesn't make the temporal relation between the creation of the knife and the usage of the knife unclear.