Question to myself

I have a question. If this blog is read only by Alfonso, Sara, Berti and me. Why we write in English? I suppose that it is because, as Fernando says, English is the lingua franca. I hope this help me to improve my English.
Speaking of all a little, What about Advanced Time Series exam?. I am really shitted, because I saw the Gustavo’s exam and Pérez-Quirós asked theory.
It’s late. It’s 23 O’clock. I go to the bed. Until tomorrow at 8 O’clock with a cake