I don’t know about typing and beer, but there was an interesting study done with rifles and whiskey. (Yeah, I have no idea how they got that approved. !!! )
After one shot of whiskey, accuracy IMPROVED.
But after that it was all downhill.
I think the theory is that a LITTLE alcohol can calm nerves, relax people. That said, I prefer that people who’ve had ANY drinks stay off the road. And away from firearms. I don’t care if a little bit improves your driving or shooting because it is extremely difficult to measure how much is “a little”. It can vary from day to day and from person to person.
Which is why it is known as Liquid Courage.
Yup.