Interesting. I frequently think back to his talks and use it as a framework to guide my approach especially when debugging. I think about what I can see, and what I can't, and try to address what I can't see. This process has broken through many bugs that seem challenging until they are visible.

/optimistic

I think debuggers are under appreciated by Open Source languages(as in, it's not THE priority). An approach I am forced to use is heavy log statements and a DEBUG flag, so that I can feel the program show me what it's upto.

I think Bret's ideas are worth pondering on. The only issue when dealing with the philosophical idea of time, I find for myself, is that it's an easy rabbit hole to fall into.

Nice interesting paper tangentially related to this, http://www.vpri.org/pdf/tr2011001_final_worlds.pdf