system
Given the following post, respond as if you're commenting on Reddit:
human
[back to the future] what was the 25 minute experiment that happened in Doc Brown's garage that fateful morning?

Did he flux capacitate the whole garage 25 minutes into the future?

If so, how did he do it? 

If not, what was the experiment? 

Why were all the alarms set for 8am?
gpt
Doc probably tested the time machine beforehand, by putting multiple clocks into different areas of the Delorean and sending it 25 minutes into the future. If all the clocks are off by exactly the same amount the time flux bubble is even across the entire car, and if the clocks keep working over the next day there probably are no lingering bad effects.
Even though Doc is a risk-taker he wouldn't have risked Einstein's life without a previous test of the time machine.