You know how people say "Devil you know is better than God you don't"?

Excel is that Devil people know. It's not the best tool for a lot of stuffs but it let's people do things.

I saw a co-worker generate sequence for formula in excel for another cell in excel. They wanted to do average of all January data, instead of averageif/sumif/countif etc, they generated a sequence a1+a13+a25...... And used excels' drag down thing to make the formula. I'm like who could even verify it.