Sunfish: Did you have a serviceable transponder or not?
George Glass: You realise that it’s just a roll of the dice in e.g. Class C, too? It’s just that the dice in Class C (should) have many more sides and therefore the probabilities of rolling ‘snake eyes’ are very remote. (It might even be that there’s a level of complacency in Class C as a consequence of assumptions that everyone’s known, everyone is complying with an airways clearance, nobody makes mistakes and equipment never malfunctions.)