A general engineering design principle is that things degrade smoothly so that there aren't abrupt changes in performance.

The aircraft controls should be protected such that foreign objects should have a low likelihood of jamming them. That there aren't things preventing someone from clearing any blockages and there aren't places where they could lever themselves in.

My car has a design flaw with respect to the floor mats and the accelerator pedal (its not a Toyota). Between how the lever arm and the pedal surface itself are design and the aftermarket floor mat, if the mat slides forward it can jam the accelerator down. These are the deep groove mats for catching mud and water. The designers didn't think of this, if the pivot point for the pedal was further up the firewall. The pedal also has a hard square edge. Both of those things are in general a design flaw for pedals. The NHTSA (National Highway Transportation Safety Administration) should and maybe they have (my car is old) the design of the pedal linkage and the shape of the pedal to reduce this kind of risk. The hooks for securing floor mats should also be standardized to help keep them in place.

The hard mount points for child seats are a great positive example of this.