This week, there won’t be any technical article. As you might have heard about, cowards armed with automatic weapons brutally murdered cartoonists, journalists, policemen…​ All all in all, 12 people died because of stupidity and obscurantism, just because their truth was contradictory to their murderers' - or just because they happened to be on site. Right now, I’m afraid I start to understand what American people felt after September 11th.