[upsdriver]

Sweet corn is the kind sold in grocery stores, whether on the cob, frozen or in the can. Field corn is the type raised to feed cattle, etc, either by combining for grain or cutting for silage. Either way, both are used for human consumption.

[Mr. Lucky]

No, corn fed to livestock is fed to livestock. Suggesting that livestock feed is really human feed just isn't true.

Pigs or chickens left to their own devices will eat all sorts of stuff that city folks would probably prefer not to know about; but just because a pig will dine on cow manure and chickens consider pig manure a delicacy, hardly makes cow and pig sh*t a human food.