&quot; The moral of this story, it seems to me, is that we should make use of the idea of limited resources in our own education. We can all benefit by doing occasional &quot;toy&quot; programs, when artificial restrictions are set up, so that we are forced to push our abilities to the limit. We shouldn&#x27;t live in the lap of luxury all the time, since that tends to make us lethargic.&quot;<p>I love the way Knuth expresses himself.