Was it just me or did that knife look a tad blunt?
In any case, I sometimes think there "neolithic experience" trips are a a bit misleading.
When neolithic man was doing this, the forests stretched for thousands of miles and were absolutely full of wildlife and very few humans. Yes neolithic man was far, far more skilled than we could ever be - but I suspect he used that skill to provide himself with surpluses and/or leisure time, rather than just barely eeking out a living.
If someone with a modicum of bushcraft knowledge was to find themselves in the Neolithic forest, I think they'd be surprised at how much food there was in them compared to the modern "tree reservations" we call forests. They'd probably go hungry the first week or so, but after that I reckon they'd have it figured out.
While Neolithic man could keep himself fed (in the summer at least) for a negligible effort, a modern man could probably just about survive by working far harder. The whole point about humans is they are intelligent and create novel solutions to the problem of survival.