A bot which never had the intention of working would get stopped by the other rules, or just on the basis of common sense, from the outset. The question is of robots that are imperfect (newcomer's bots might well have intermittent drive) or machines that are damaged during the same competition, being allowed to enter. I agree with Jamie in that they should. The opponent(s) will 9/10 get the win and the limping bot's builder knows that; everyone is happy. By disallowing dysfunctional robots the opponents get the advantage of scoring higher minimum points by default, the offset between established and newcomer would grow, which isn't fun.
Although a countdown fairly immediately (maybe allow a 10s buffer) to eliminate the half dead robot is reasonable, under any other circumstances they'd be counted out, but I still think they should be allowed to get the point.
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