I think maybe by learning to hear again, mostly just a theory at this point though

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Observe any "drooling babbling" infant, it's brain is keenly observing, trying to connect & coordinate with its' new body & the world. Learning every second....they sleep a lot because they are doing hard, hard work, muliti-tasking every second of every moment.

I read, watch documentary history or listen to lectures and interviews, keep my mind open, hike to connect with Earth, have traveled fairly extensively, and meditated. Can't say that I'm wise but nor do I think myself a drooling idiot.

Unfortunately a man however wise may return to the babbling drooling stage from the results of old age or other debilitating disorders .