1.
The main character (Thomas) asks why they don't climb to the top of the walls and walk the maze that way. He is told the vines don't reach to the top. Firstly, they do, you see this numerous times in the movie. Secondly, they'd been there three years. That's more than enough time to create a tower/ladder/collection of logs to climb the walls.

2.
At then end after escaping, they all gather around a video to hear what is going on. Thomas got his full memory back. He knew the Earth had been scorched and everything else happening in the world. Why didn't he explain it to everyone else and why did he act so surprised?

There will be more so stay tuned!

Btw I don't own these ^^ they aren't my words.

~Ali

>W<