system
Given the following post, respond as if you're commenting on Reddit:
human
ELIF What is the reason for the statute of limitations ?
gpt
You have a right to a fair trial.  If the government comes to you and states that 25 years ago you stole a TV because you still have that TV in your home, it is unlikely that you still have the receipt to prove that you purchased that TV.  

At some point the ability to prove you did something or provide evidence that you did not do something is so hard it is not worth it for a lawsuit.  Witnesses move and memories either fade or get mixed up.
The statute of limitations allows life to go on without needing you to hoard receipts and worry about maintaining permanent alibis.

However some crimes, like murder do not have a statute of limitations because no matter the inconvenience of tracking down evidence, society has decided that a criminal  must be punished for certain crimes.