The continuous/analog question is interesting enough that there was a physics essay contest on the matter - the winners are at http://fqxi.org/community/essay/w

The continuous/analog question is interesting enough that there was a physics essay contest on the matter - the winners are at http://fqxi.org/community/essay/winners/2011.1 http://fqxi.org/community/essay/winners/2011.1 and they were great reads even for a layman such as myself.