Panpsychism is not as crazy as it sounds.

[Chas]

By random forces, we're actually talking about Darwinian selection, are we not? In which case, it makes sense that nature would select for intelligence but not necessarily consciousness (think computer).

We're talking about other contributing factors besides natural selection and random mutation. These other "random forces" could be things like geography, climate, catastrophic events like meteors or hurricanes, the elemental composition of Earth, etc.

You seem not to understand natural selection. Those 'random forces' are part of the sieve that is natural selection.