There are plenty of people who can lift 800lbs in the idealized form of barbells along certain ranges of motion, such as the deadlift or squat. However, I sincerely doubt any human could lift 800lbs of dead weight gorilla, much less one that is struggling. The heaviest stones that have been lifted are in the mid 600# range, and lifting a stone is easier than lifting an equivalent weight of floppy body.
There are plenty of people who can lift 800lbs in the idealized form of barbells along certain ranges of motion, such as the deadlift or squat. However, I sincerely doubt any human could lift 800lbs of dead weight gorilla, much less one that is struggling. The heaviest stones that have been lifted are in the mid 600# range, and lifting a stone is easier than lifting an equivalent weight of floppy body.