attention

  “Very little is needed for everything to be upset and ruined, only a slight lapse in reason. it’s much easier for a mariner to wreck his ship than it is for him to keep it sailing safely; all he has to do is head a little more upwind and disaster is instantaneous. In fact, he does not have to do anything: a momentary loss of attention will produce the same result. It’s much the same in our case. If you doze off, all your progress up to that point will be negated. To keep a sharp eye on your...