That ladder isn't going anywhere.
Trust me, I was a Woodshop T/A in high school.
You choose then to put the larger ladder on the staircase, which is impossible without separately extending feet on the ladder, and very close to parallel with the wall (dangerous) or against the wall behind them, putting the ladder nearly perpendicular with the wall (also dangerous).
You could stack blocks underneath the lower step but that's even more dangerous (from personal experience)
The force of both the ladder and the guy being applied to the wall, plus the static friction coefficient between the ladder and the wall, is greater than any visible external nudge or push against the system side to side or upwards.
Pretty solid setup actually.
>gifs that make u go hmm
>posts a webm
My leg hurts
I went to a grocery store with my bf and he decided to get a loaf of rosemary olive bread and I ate some and then my ass bled. I think it's because the flour is iron enriched. His penis never makes my ass bleed (not really. microscopic tearing always occurs during anal intercourse).