Diary in English

I take the class " Data Science for society" on gacco.
But I've been lazy so dead end is coming.
I have to watch videos though I can't understand well.
I want to understand deeply, so I'll do after the class.

A scammer is in our office now.
He doesn't know we are suspicious. It must be a situation comedy.
We know he use motor bike to commute against rules.
A few months ago our company gave him money for 6 months commuter pass. He passed the receipt and money for 3months back to the company 2 weeks ago.
Why didn't he buy 6 months pass?
I think he bought 3 months pass and get receipt to give it.
But he might refund immediately without receipt (because he has a pass), then he gave back money to company.
We know he is trying to skim off the money.

yare-yare.
Drama is still going.
It's fun.