With Excel I can do things fast, at the beginning, but then I find that it get a bit more tricky, I get lost, I find out that things are wrong, I do more, I want to move to R. I can't move to R. It will take me a week. I have a day. Then I want to move to R, it will take me a month, I have a week, then I want to move to R, it will take me a year, I have a month. Then, I want to drink bleach.