Interesting question.. .Have noticed many Johnny-come-latelys to the training environment do, at times, tend to overload those behind the pole with multiple failures. This generally results in total confusion, poor morale, sub-standard performance, and contributes NOTHING to successful training.. .This type of behavior is certainly not cost effective nor desirable. In short, it needs to be eliminated.. .And before you ask...yes I have been involved with training for quite some time.. .Engine and system failures, yes.. .Navigation and FMS failures, absolutely.. .All at once...forget it.