Of course, Chongo Chimp introduced a totally new concept into the discussion:
You don't need an infinite force to move a really large man or gorilla in whatever direction you want him to go. You just need to hook two fingers inside his nostrils and PULL! He will go whatever way you want him to, and with only a small amount of force needed. It don't take much energy, just good accuracy and follow-through.
It should be noted that this is actually a 'push'. Gravity and magnetism exert a pull. Everything else is a push.

Discuss!

Happy New Year, Blwyddyn Newydd da!

Nigel