Suppose we are to evaluate: $$I = \int_{0}^{1} f(x) dx$$ Where $$f(x)=\begin{cases}1 \space \text{if} \space x\space \text{is rational}, & \newline 0 \space \text{if} \space x \space \text{is irrational} \\ \end{cases}$$ I have been told that this can be done using measure theory. Will any...

The new font changed some of my posts lines/paragraph from 3 to 4 which broke their readability. I'm planning to be able to force a custom font from the client-side if I need a quick-fix of readability. What was the name of the font Stack Overflow was using just the other day before?

Agreed. I'm a fan of the new design overall, but the buttons just don't seem to fit with everything else; the bright blue stands out from everything on the page (and not in a good way). One option is to keep the black buttons the way they were kept with the Meta redesign: Another is to redes...

My primary language being French, I can clearly understand what en route means ("on its way"). I can't see, however, why English-speaking people would use this French expression. Why is it used?

In the old design, similar badges were grouped together on the badges page for the all tab. This is helpful because it is easier to recognize an entire group of badges at a time, and other tabs doesn't group them, which is reasonable. However, the new design doesn't have them anymore. Separato...