I'll guess this is the same as the 'unconference' talk that David Nolen gave at the 2012 Conj. He's doing some really spiffy stuff with the new constraint mech

I'll guess this is the same as the 'unconference' talk that David Nolen gave at the 2012 Conj. He's doing some really spiffy stuff with the new constraint mechanism in core.logic, and this talk was among the best of the week.