TL;DR
**A wall of text**, about the relationship of rotation, angle and power and learning. And how do they work.

Learning Power Tricks (Hypothesis):

In-terms of power tricks, aerials or anything with high execution it is always good to keep a fixed amount of rotation/angle/power memorized.

The **goal **to learning a trick is not by grinding until you get it, but memorizing the **RAP (rotation, angle and power) **by a consistent value. (with adjustment and relative memorization)

That's why if you watch any WR of Power Tricks and Aerials you will see that it plays like a looped-gif, or like it's just repeating over and over again. The main philosophy that is "if you can do it twice, you can do it infinitely as many", this is exaggerated but it still holds truth. As any time, *RAP *might reduce from a single mistake and carry on to the next few rotations and eventually fail, these mistakes are recognizable by the experienced spinner, similarly to how an intermediate spinner can understand when they did a thumbaround but accidentally pushed it too weak.

The margin of error sets the standard of difficulty a trick can have, for example in Palm Spin ~ FL TA (The one which I am learning) if you make a mistake, say by misplacing your thumb and hitting the center for a thumbaround leading to the palm spin, then your Rotation and Power would reduce, causing your next palm spin either to fail, or to fail right after doing another.

Even though there are tricks that has an 'apparent' high margin of error, its abstract value is still deducible by the tricks recoverability (psuedo-engrish ._.).

Recoverability can be analyzed by: Space - The amount of space you need, the amount of space you can move and control. Effort Precision - The precise (not great) amount of work it needs to produce the correct *RAP.*

Better explained this way:

Let's compare the recoverability of: (1) Spread Cont. (2) Curled Spread Cont.

(1) the amount of space you need for Spread Cont. is as big as your pinky finger, plus your third knuckle (ring finger) counts as a space. The amount of Effort Precision it takes for a spread cont. is VERY LOW. You can hit it with say a specific amount of force and going way over that specific amount of force will not lessen your recoverability so much.

(2) the amount of space you need for Spread Cont. is very small (i can't do it, and I'm guessing it's in INCHES), the Effort Precision is VERY GREAT, according to @i.suk you will have to use the tip of the knuckle to create a specific amount of **RAP**, talk about a small space even getting smaller in its Rotation phase.

Point made, now I can bluntly say:

(1) Spread Cont. **[Wide Range of Space, High Recoverability] - Easy**

(2) Curled Spread Cont. **[Miniscule Range of Space, Almost No Recoverability] - Extremely Difficult**

Another issue, with learning is that recoverability must be memorized too. If you want to become more stable, having a fixed amount of **RAP** will allow you to become consistent in large numbers, but you must also **memorize recoverability** - That is by taking advantage of the amount of space you have, and what amount of power goes in to what part of space. (Palmspin has a lot of space, and Peem usually shuffles from the center to the inner-right side of his palm, which means he actually recovers a lot). If you memorize recoverability, it will lessen your "critical mistakes" and allow you to go further.