Revealing mistake: The doctors remove a bullet from Elliot's abdomen and place it in a metal medical dish. The bullet appears to be a 9mm or a 9mm short however it has no striations. When a bullet is fired it goes through the barrel picking up the land and grooves of the bore. The bullet should have spirals, this one looks brand-new, like it was just purchased to reload ammunition. (00:48:30 - 00:49:00)
eps3.6_fredrick+tanya.chk - S3-E7
Other mistake: Angela keeps watching by rewinding the same scenes of the news of the data storage facilities collapsing from the explosions which targeted 71 facilities. The explosions look controlled like the demo of the old Las Vegas hotels and casinos. Data storage facilities are concrete/metal buildings with very few windows. The building she's watching collapse appears to be an apartment building with hundreds of large apartment style windows. (00:25:00 - 00:27:00)
shutdown -r - S3-E10
Other mistake: In one of the previous episodes of season 3, Elliot threw out his garbage along with his Mr. Robot jacket at an inner city dump where people burn the trash in large dumpsters on the spot. The jacket was thrown into the flames. Now Whiterose's men home invaded Elliot's apartment looking for him, and they found the same jacket in his closet. Yes he could have had more than one but when he threw it out it symbolized him getting rid of the entire Mr. Robot idea. Why toss one and leave the others? (00:01:30 - 00:03:00)
Suggested correction: When Elliott is walking up to his apartment after he threw the jacket out the illegal trash workers dump the trash in front of his apartment and the jacket falls out. He was talking about deletion around this time.