system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do the mechanical elements of a hydraulic press (oil, pumps, valves etc) withstand pressure that can flatten a piece of metal?
gpt
The mechanical advantage of hydraulics is that extremely high pressures are not necessary to generate a large force.

If you had a piston 1 foot in diameter, a measily 50 psi can generate 5000 pounds of force.  Force = pressure times area.