Is it true or false that it is impossible to stall an airplane with "hard" envelope protections?

The statement that it is impossible to stall an airplane with "hard" envelope protections is false. Hard envelope protections, often found in modern fly-by-wire aircraft, are designed to prevent the pilot from exceeding certain aerodynamic limits, such as excessive pitch angles or bank angles. While these protections significantly reduce the likelihood of entering a stall, they do not completely eliminate the possibility.

If a pilot were to deliberately or inadvertently push the aircraft beyond its designed limits, it could still result in a stall, particularly if there's a failure in the protective systems or if the pilot overrides the protections. Moreover, envelope protections can sometimes be circumvented in unusual flight conditions or situations where the aircraft is maneuvered extremely. Therefore, it's important to recognize that while hard protections enhance safety and assist in preventing stalls, they are not an absolute safeguard against them.