> The most interesting thing about Lincoln is that absolutely nothing about his assassination makes any physical sense.

I disagree with your assumptions, and appeal to authority.

There are more details readily available that are known, but some we may never know. Booth barricaded the door upstairs. So the security guards would had hard time getting in upstairs. As soon as Booth landed on the stage he was chased by Major Joseph B. Stewart and footlights. They had to climb onto the stage over the orchestra pit.

The drop from the balcony to the stage is not certain, some records put it at 12', some at 15'. Basically a first floor (2nd in US) window. There are ample stories where people fall from heights with minimal to no injury. The stage is wood scaffolding, that gives on impact. It is elevated, and there is low-headroom space under it. "At first, the crowd interpreted the unfolding drama as part of the production, but a scream from the first lady told them otherwise."[0] There were screams and pandemonium. [1] Smithsonian has even more details, including how someone recalls Booth's spur getting caught while jumping in the flag draped over the front, potentially slowing his fall, but landing on hands and knees.

[0]: https://www.history.com/.amp/topics/american-civil-war/abrah... [1]: https://en.wikipedia.org/wiki/Assassination_of_Abraham_Linco... [2]: https://www.smithsonianmag.com/history/abraham-lincoln-team-... [3]: https://www.ushistory.org/us/34f.asp