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wait for it
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Vacuum cleaner!
Not everything is set in stone and some things are totally unexpected.
In light of this we need to make do with what we can.
However some things may just surprise you.
I closed all the doors like I normally do and turned the vaccuum on. I went back into the office and before I knew it the vacuum was at my feet. It scared me and made me jump!
Somehow it managed to open the door, the only reason that I can think of is that the door wasn’t closed all the way.
So relax, have fun, expect the unexpected!