That seems like one of those nightmarish calculations they had us do in theoretical mechanics. On the face of it they seem rather simple/innocent. But as soon as you get into the details the horror begins (and you quickly figure out why it's almost always easier to solve real-world problems via simulation rather than by solving the state equations directly)

This is also why learning formal math has no good meaning for solving real life problems

You think that simulations aren't based on *very solid* math that needs to be understood before you use them?

Wow...you are so deluded. Taken your meds today, have you?

BTW If you don't know about it, it also answers the question, if someone has to understand the math used by numeric solver before (being able to) using it. Of course you don't have to understand it. For example https://www.youtu...0p8sSfpQ can be used without any knowledge of math actually.

However - someone had to do the math to create the sim, in the first place....

And why do you always end with ad hominem insults,

Because it always boils down to one thing: You're dumb as rocks? There's really no point for you to be anywhere near a science site (or even just a science journalism site like this). The stuff that goes on here is so far over your head it's not even funny. You don't even understand the meaning of the word 'science' - and it show in every post you make.

To use a simulation you have to know what it's based on. Otherwise you run the risk of using the wrong simulation and producing garbage output (a phenomenon not uncommon e.g. in statistical analysis where use of the wrong statistical measures can skew the results). If you are not aware of what a simulation approximates and how well then you won't be able to confidently draw conclusions from the results.

Just throwing a random solver at a problem will get you nothing (well, it *will* get you laughed at - that's for sure)

The uncooked egg can not last longer and rotate properly. Why? If this is to be solved, then it is much easier to find a solution for boiled eggs. Cooked egg is a non-homogeneous and asymmetrical ellipsoid. It has its center of gravity and, whatever it is, on the ground, the point of the support does not stand on any axis passing through the center of mass. If you eat any rotation. there will be a movement composed of two spins: a rotation around the axis of the axis and a rotation of the center of mass around the point of the support. This occurs on the sinusoidal radius of the center of mass around that point.