I don't know what else I can write without repeating myself.

I already wrote that even under the assumption that intelligence is a purely biological phenomenon, it does not follow that computation can produce intelligence.

This isn't a matter of probabilities. We know what computation is, because we defined it as such and such. We know at least some essential features of intelligence (chiefly, intentionality). It is not rocket science to see that computation, thus defined, does not include the concepts of semantics and intentionality. By definition, it excludes them. Attempts to locate the latter in the former reminds me of Feynman's anecdote about the obtuse painter who claimed he could produce yellow from red and white paint alone (later adding a bit of yellow paint to "sharpen it up a bit").