If you were to jump off a tall building, let's say Burj Khalifa, is it true that the pressure difference would be so strong as to kill you before reaching the ground?
No. The answer is clearly no. This building is 800 meter high. Some comparison:
- Skydivers are falling more kilometers in free fall. They experience absolutely no damage from the pressure increase.
- Scuba divers moving fast upwardly or downwardly also don't get any wounds, although 10 meter deep water has the same pressure as there is between the sea level air and the space. A sudden decompression can cause bodily harm for them (it is the so-named caisson disease), it requires much bigger compression change, and happens only on decompression. If you fall from the Burj Kalifa, you experience compression (until touchdown).
This small compression change caused at most a little bit of tinnitus, similar we can feel during aircraft landings. It surely won't be the biggest problem of the jumper.