Again your genius shines through. Author Jones use to point out how intensity and duration are inversely proportional. You can train very hard or very long but not both. It's like the difference between sprinting and jogging. Full on sprint your staying power is measure in seconds. Jogging can be measured in hours. For muscular hypertrophy intensity is a more important factor as seen in the difference in physique between a sprinter and a marathon runner. One has sleek muscularity. The other looks likes a one just released from a concentration camp.
What's rhabdo?
I never understood what the sprinting/jogging analogy had to do with weight training as far as intensity is concerned?

Even less with the HIT/Jones dogma for a few reasons:
1. What sprinter ever sprints to failure? None that I know of
2. I think sprinters do multiple sprints in their workouts, sprint/rest and so on, which is actually similar to weight training: work set/rest, set/rest and so on.
So the idea of "you can't do more than one intense set" and the analogy HIT proponents use of sprinters/joggers is faulty, because sprinting is has more things in common with multiple set weight training, in the sense that both are anaerobic blast/rest and repeat. And jogging does not have anything in common with volume weight training.