I'm an engineer so when people ask if something is possible my honest answer has to be that anything is possible.
Would you allow me to rephrase your question? I'd rather answer the question, "What is the likelihood that the knob can be installed incorrectly or that the mechanical interlock will fail in a way that would allow the knob to unexpectedly turn the burner on when not intended?"
My answer to this question is that it would be EXTREMELY improbable that this would happen. I say this for the following reasons. 1) The part of the knob that allows the user to push the shaft inward to override the safety interlock is a completely separate piece from the part that turns the knob; 2) Both of these pieces are made of smooth, lubricious plastic such that it should be very difficult to install the knob in a way that they would bind; 3) assuming the user did install the knob in a way that made this possible it would be very obvious to the user that things are not right; 4) the knob software is written in a way that the knob will refuse to move from the off position without physical intervention from the user.
What I've described is generally called a defense in depth approach. You put a bunch of safety mechanisms in place such that all of which have to simultaneously for a bad event to occur.
Would you allow me to rephrase your question? I'd rather answer the question, "What is the likelihood that the knob can be installed incorrectly or that the mechanical interlock will fail in a way that would allow the knob to unexpectedly turn the burner on when not intended?"
My answer to this question is that it would be EXTREMELY improbable that this would happen. I say this for the following reasons. 1) The part of the knob that allows the user to push the shaft inward to override the safety interlock is a completely separate piece from the part that turns the knob; 2) Both of these pieces are made of smooth, lubricious plastic such that it should be very difficult to install the knob in a way that they would bind; 3) assuming the user did install the knob in a way that made this possible it would be very obvious to the user that things are not right; 4) the knob software is written in a way that the knob will refuse to move from the off position without physical intervention from the user.
What I've described is generally called a defense in depth approach. You put a bunch of safety mechanisms in place such that all of which have to simultaneously for a bad event to occur.
Hopefully that helps.