A bygone age, where polymathy was still more the norm, before the corporation separated us into maximal-bar-one ignorance, of "specialisation",

and (I recently read, in the new book I'm reading) they lopped off the latter half of the expression "jack of all trades, master of none" [something like, "... is more often better than a master of one."],

and they convinced us the specialists were the "experts", the sages of the enlightenment, the wise ones with superior knowledge. ... All the while they're one step away from maximal ignorance.

I wonder how much better acting (and all "professions"/skills) could be, with a broader range of skills beside.