While manual pressure cookers still leave room for human error, as one can clearly see here, Instant Pots come with built-in safety mechanisms that prevent them from overpressurizing and exploding. Firstly, the lid of every Instant Pot locks securely once under pressure which prevents it from exploding. If it doesn't lock, excess pressure, which would otherwise reach dangerous levels, is constantly vented out. There are also up to three built-in safety valves that automatically lift, creating an outlet for excess steam, thus releasing dangerous pressure before danger levels are reached.  Blockage of the vents is prevented by means of an anti-blocking vent placed strategically. Each unit automatically detects the internal pressure, temperature, and position of the lid. Your Instant Pot will switch off by itself before hazardous pressure levels are reached. Instant Pot's final failsafe is a mechanism that flushes extreme pressure into the internal chamber if a dangerous situation arises. Furthermore, electrical faults are covered by an automatic fuse that cuts power in the case of a fault.