It’s important to be precise! Well, sometimes at least, often it’s not. The trick is to know the difference. It’s always funny to watch people who have no sense of proportion and appropriate precision. E.g. when you want to calculate your return on investment on something, and some of your input variables are a wild guess or at least a rough assumption, there is always somebody who then ends up with a dollar figure calculated to the tenth place behind the comma and thinks it’s accurate.

Oh, and talking about writing down sums of money. One of my pet peeves is this: When you write down an even amount here, you put a comma and a dash at the end. E.g. when Americans would write $21.00 we would write $21,- . By the way, I don’t know if this is a European or German thing. Other Europeans, do you also do that?

Anyway, there are some people (some close to me, I won’t name names) who don’t know that that’s supposed to be a comma and think it just means “something to do with money”. So when they write down $21.45 they write $21,45,-! Aaah!! Why? How can you have two commas in one number? Sometimes you even see it on menus of restaurants. For some reason the concept is really hard to explain though to people who do this …