system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do washing machines always say they have one minute remaining, but it always takes so much longer to finish?
gpt
When there's one minute remaining, what the washing machine is doing is spinning to remove water 

One reason it could take longer than expected is load balancing: for the washer to spin the clothes at high speed, they need to be evenly distributed around the drum.

If they're not balanced, the resulting vibrations can be quite destructive.

So the washer will spend some time to balance the load, and how long this takes really depends on the type and quantity of clothes. Sometimes it's fast, sometimes it's impossible and the washer gives up without actually spin drying the clothes. Most of the time it's somewhere in between.