If I grab a villager and chuck 'em up at the berry bush because I'm low on food and don't want to wait for them to walk back does that slow down their learning foraging because they don't walk back?

If I grab a guy with berries or detrius from the beach where does that stuff go? Are the berries taken from the bush when they're put on the food table or when he walks away from the bush? Are those berries lost or do they go back to the bush?

My villages always start out with someone who has some construction skill, do they ever start with farming or research or am I wasting my time starting over and over and over trying for a more immediately useful skill? Or am I doing it wrong and I really NEED that construction skill right away?