Why Cisco Packet Tracer takes SO MUCH RAM?!

Just looking at someone who accidentaly reseted Final Exam Activity on Cisco Packet Tracer. Then i whisper on his ears.

"Try to read the dialog message. Never try to Slam every 'OK' button"

RIP cisco test....
Teach told us that we're writing an exam of the topic 5.1.4...something, ok, I downloaded the files (packet tracer, PDF). 20 minutes after I realized that I was working on the wrong one, coz it was actually 5.2.something, soooo I fucked up half of the time (a lession is about 40 mins) and when I finally finished I saved the PDF where my answers were given, uploaded it and when I checked it I saw the raw document.
I fucked this up reeaal baad.... I can't even focus on a fucking easy task now, I have to calm down

Cisco packet tracer.