A lot of other people have reacted. What a disastrous update. The phrase 'if it isn't broken, don't fix it' comes to mind. It worked well for me and obviously so many other users, hence its success. I have been making good progress for 2 years. The new design / interface strips away the incentive to refresh previously learnt lessons, which for me was essential. For the free user this has made everything far less accessible which undermines Duolingo's lofty ambition to make language learning available for all. What a huge disappointment this change is. Why didn't they consult users? They would have received clear feedback that this change was a bad idea. Why change a winning formula?