PhilS: Bottom line is that the electronic scheduling of the calendar can provide us much greater flexibility. All the issues you have against pushing a day would be taken care of simply in the calendar by switching days around (a capability they offer). It would not screw up your race schedules and planning–I race a lot and wouldn’t suggest a solution that would do that. It makes my scheduling for racing easier. Need another rest day before a race? Push a day and insert Taku/Pettit. Easy. Want to move back a VO2 Max workout? Drag and drop. You have your own way of accommodating tiredness in the current schedule–good. You recommend I play with it. If you read my posts, I am–because I have no choice! I currently back up all my weeks to leave an empty week for the following week, move things back if I need a day, then backfill the next week when it comes close. That’s way too much fiddling for an easy solution of inserting a day into the schedule. Yes, there is a logic to the week–as I stated, it’s a human SCHEDULE logic, not a human performance logic. I have the luxury of not being very constrained by the days of the week, so I’d rather push days–net/net it would be a fairly big improvement for me, and I think for many others.
Fine. Whatever suits you.
Personally, having chosen a plan and scheduled the weeks/ days, I am happy to shuffle things around as I see them, and shuffling pieces around. Never felt I wanted to push the whole schedule back a day. Whatever works for you…
Question to think about - would you also move all the annotations one day on? You see I put an annotation above the workout to say what it means, in plain language. eg “6x5mins@105% 3m recover”. I also put annotations about training sessions outside, with a purpose. If I move or swap a session I put an annotation to explain to myself, and remind myself, why I did it. So would you move annotations on a day as well? Just a thought…
What does this mean?
“Bob’s your uncle” is a phrase commonly used in United Kingdom and Commonwealth countries that means “and there it is” or “and there you have it.”
“It is done” or “Robert is your father’s brother” Very traditional English expression - don’t ask me the origins. It has been around for yonks. 
Got it, thanks!
“yonks” = a very long time. It’s under the UK urban dictionary (along with uncle Bob) in a long list of words and phrases designed primarily to cause Americans to spend time translating…and so it goes.
More related funny words and phrases:
if your OCD is really bad, you would then know it should be CDO… 
An excellent article - thank you! And thank you Trainer Road. I just turned 63, been riding TR religiously for 5 months. FTP/kg is
now 366 and beating many younger girls in our Spring Series races. I think I must have a lucky gene type as I have never skipped (or not completed) mid volume TR training because of too tired. I’m on the specialized climbing TR presently and goal is the Canadian Nationals this June. REALLY, AGE IS ONLY A NUMBER.