quintopia wrote:In any case, Qaanol's experiments have proved to my satisfaction that it is possible to cook the egg to the equivalent of the 6 contiguous minute egg in under 10 minutes (by doing the official 9 minute solution with a quick cool-down and slow warm up in the three minute delay, plus a little bit more just to finish). In the future I will accept as correct any value strictly less than 10 minutes.
What? The principle behind the puzzle is that we have no ability to measure the passage of time except by the hourglasses. This means between the 4 and 7 minutes after the start, we cannot measure subintervals whatsoever. There’s no way to accurately, reliably, and repeatably control the cooling and warming of the egg in that period.
Furthermore, even the use of a bowl of water in any capacity violates the spirit of the puzzle. The idea behind a logic puzzle is that everything necessary for and permissible in the solution of the puzzle gets included in the statement of the puzzle. If your solution requires things besides hourglasses and boiling water, I strongly object. I mean, if you allow ice water, what’s next? Creating a pendulum using kitchen utensils, counting oscillations during the first four minutes, and allowing half that many more oscillations beyond, for a total of six minutes?
I think it’s a clever puzzle both ways. When it needs to be done continuously, it shows a shorter time interval may take longer to measure. When non-continuity is allowed, that is a clever twist on its own.
As I mentioned before, if you want to allow non-continuity, I’d change the question. My suggestion was “You need to put enough sand in an hourglass to make a 6-minute timer. How quickly can you do so?”