Can we say compulsion is completely different from intent though? Or are we just arguing over semantics? Can we place an arbitrary intelligence threshold on when compulsion can be inferred as intent?

For instance, most spiders build webs, and it would seem they do it by no other mechanism than pure genetic instinct. However, there don't seem to be any external 'cues' as to when the web is finished (in contrast to the water falling cue we assume beavers use). The spider builds the web until it's done building the web. Did the spider intend to build a web, or was it compelled to?