That's the second time you've referred to a mindless task or a task that would dull the senses. I guess, I don't know which ones you mean.
The short answer is that we guard against that by continuing to invest in training, putting people in realistic scenarios that cause them.....
You were with General Bowes, who would never be one to say there is one answer to any situation. There is no one solution; there are many solutions to a problem. So giving the soldier the opportunity to practise and an opportunity for education outside of the strict training regime are things that directly affect our readiness to be able to function as a force.