you have to rid yourself of the expectation that the psychedelic is gonna do anything at all when on microdosing regime - not so easy for those of us who actually like to feel our drugs when we take them

Your subconscious (or conscious lol) wants to 'feel ' it as a drug when it would be more appropriate to conceive of a microdose as a vitamin
Often people dose too high. A real microdose should be sub-perceptual, absolutely no more than, say, 10ug lsd, probably more like 7 or 8. Ths can be tricky as you have to know the exact strength of the substances you're dealing with and then have the capacity to volumetric dose accurately. Cutting a supposedly 100ug tab into 12 equal bits just isn't the way forward as A) might not be 100ug and B) the lsd could be unevenly distributed on the blotter.
There's definitely something in mental health treatment via high (and low) dose psyches but that's a whole different kettle of fish than microdosing
You're exactly correct in every point here.
I was going to say,10ug or above and I always feel an effect, regardless of supposed tolerance, i.e. even when taking lots of acid regularly for a good while at all doses, I still seem to be able to feel pretty full effects from any dose.
But even 10ug can be noticeable.
So yes, to truly be sub perceptual, but sufficient, 7 or 8ug sounds more realistic.
Your other points also mirror my own thoughts and many time spoken words.
Firstly I will say, that even if you do know the exact ug in your tabs, and there is almost a perfectly even and consistent distribution over the whole square, and tab to tab, cutting is very unreliable and way too guessy, hit and miss to be reliable.
I often take 1/4 to half tabs. Just citting a tab into 2 equal halves with scizzors is very tricky.
Probably a scalpal on a flat surface would be the way to go.
But even if I have two apparently equal halves, cutting two equal quarters is even trickier. Let alone into 1/8ths, for 12.5ug.
If you got a super precise milligram scale, which really does hold almost to the milligram (I'm sure they exist, but my own milligram scales are just not up to that level of precision, one tab weighing about 18 mg), then it could be more consistently and replicably done.
But ideally, volumetric dosing is the only logical, sensible and reliable way to go.
However, I cannot tolerate any form of alcohol at any dose.
I use distilled water, but there is never, in my experience, a totally full dissolution from the paper into the distilled water.
I have tripped quite strongly swallowing 2 tabs worth of an emptied MD bottle, after getting noticeable effects from allegedly 10ug, or 1ml of a 20 ml bottle with 200ug.
So this can be also be considered, but it doesn't necessarily matter if 1 ml is under 10ug. The doses thoughout the bottle should be consistent so ypu can experiment and see what works best, what you feel and don't feel.
I think using alcohol will leach more of the acid out of the paper, but I can't say that for sure. I also think cutting the tabs into meny smaller pieces may facilitate a better dissolution rate, even into 4 pieces is not enough. Let alone a whole tab,,and surely is related to overall surface area, which makes sense.
Regarding much of the above and specifically your points about not knowing for sure the actual exact dose on the tabs- this is where the legally available in Holland, Poland, Germany and Canada, clearnet Lysergamides, 1plsd and 1cP-LSD in particular, plus the now no longer currently produced ALD 52, come in perfect for the task.
They are made and laid as professionally and consistently as possible, by legal and very competent Dutch Chemists, to the highest level of purity, and laid so accuratley and consistently at very close to 100ug per tab, with virtually no hot spots or unevenness, as indicated consistently by my own extensive subjective experience over tha past 2 years.
This makes these clearnet lysergamide 100ug tabs ideal for microdosing.
I do agree with all of the good points you make.
However, I still also feel that there is therpeutic benefit from doses which are perceptually felt, from 10ug to 25ug.
It can be argued that above a certain threshold, if not simply the perceptual one, "mini-dose" is the correct term.
But mini-dosing can actually work very well for the same purposes.
I think most people who attempt microdosing actually prefer to feel a little effect, in a sort of mentally stimulative way. And mini dosing up to 25ug is very popular.
But you would be correct to argue that is isn't truly a microdose if you feel it and are conscious of the effects.
But in my mind, that doesn't mean the practice will not be equally, or possibly even more effective, purposeful and rewarding.
A scientific study, subjective of course, examined 3 doses over a period. 13ug was indicated to be the most productively beneficial in certain ways.
But 26ug was also therapeutically beneficial in a different manner.
It's all still very unwritten and determined.
25ug always feels quite strong to me, and I and many others enjoy this exact dose.
My 70 year old mum tried microdosing. Even 0.75 ml, 7.5ug at most- was way too syrong for her, way above perceptual level.
She even noticed 1ug, but the perceptual effects were milder and dropped off sooner.