The Halting Problem Revisited

John Koethe. Sally's Hair. "Continuity and the Counting Numbers"

One let's you trace out what you've been or are
Or might yet become; the other is a row of tombstones

You plow right into them because you are carried by the alternatives of past, present and future. And the future is terminal.

And so for day 1625
26.05.2011