>>I’m not sure that the alternative–spreading the commitments out over five days–would be any better.<<

It isn’t. You just increase the probability that on any given day the work allotted to that day will get sidelined or supplanted by something else that randomly comes up. You’ve got all of your deadlines nicely worked out, work nicely portioned out through the week, with the goal of leaving the workspace stress-free on Friday at 4:59 and returning to a clean inbox and a workable day on Monday?

And then some predictably unpredictable thing throws, say, Wednesday out of whack, loading up Thursday, which gets just a BIT stickier than you thought it would. Suddenly, Friday is a tottering pile of must-dos, and nobody is around after about 4 to respond to things, so even though you get done what you have to, it’s not really certain WHAT Monday will look like and before you know it you’re getting used to checking email on Sunday night to make sure you’re not too far behind on Monday…

So, it’s bad on Monday’s anyway, and your self-organized time is reduced to two days.

OR — I’m an even more poorly organized person than most. Come to think of it, that’s probably what it is. Disregard everything I just wrote…