Yeah, we're pretty good at making pretty damn anything "fit for human consumption", including quite a few things that are outright poisonous if consumed unprocessed.
(Corn doesn't need special processing to be edible, but it does need special processing if you want to avoid dying from nutritional deficiency when having a corn-based diet).
(Corn doesn't need special processing to be edible, but it does need special processing if you want to avoid dying from nutritional deficiency when having a corn-based diet).