Cavalry and chariots against infantry

[Robert Vermaat]

Some cavalry vs infantry collision models:

Do you have a larger picture? I can't quite read all of the text.

So this actually confirms my point of view - in each case at least the first 4 ranks of infantry (and in some cases all ranks) are smashed by cavalry.

Are those models based on mechanics (theory) or fact (sources)? Because if so, I wonder why dismounted cavalry and infantry on many occasions managed to hiold off cavalry attacks for hours or even indefinately.

Regarding how animals are - supposedly - too intelligent to be forced to do suicidal things:
[..]A video showing modern horses - so horses far from being trained to do such things (unlike combat horses from the past) - ramming solid objects and plunging into crowd

All videos are of panicking animals. Are you suggesting that cavalry charging into infantry would also be in a state of panic? If so, how would the riders control their horses to charge in the right direction?