We are two mathematicians (Lorenz Gilch and Sebastian Mueller) who are fascinated about the new era of data science. The term *data science* is about to appear almost everywhere nowadays but many people either do not know what it is or disagree on its definition. We go for

*Data science is statistics done by non-statisticians.*

Let us answer beforehand two typical questions that we were asked already several times.

@ mathematical colleagues wondering about what we do is mathematics: *Nop*.

@ people who are interested in the applications of mathematics: *Yes, everything is based on mathematics.*

Have fun!

Note: This is a private blog that does not reflect any opinion of our employers.