After entering the Coursera “tunnel”, I’ve totally forgotten that there’s a whole world out there, so my sister and I have re promised for weeks and weeks to go out, eat the ice cream with the strangest taste we could ever find and do some sane shopping. Few weeks ago we planned a nice shopping afternoon, even because I needed a light jacket. So, what happened? No jacket! We went to the usual shop-bazaar and bought some “things”, we didn’t even need some of them! First of all, I wanted to buy a small fan brush for nail art and, at the end, I’ve bought this: a kit with 6…