The first 3 seasons were amazing. Characters were developing, creators were focused on the amazing issues - socio-physical barriers of a person with autism, medical dilemmas, love, etc. The 4th season struck with a gush of liberal garbage so hard that I just dropped watching in. It looked like the director changed or something. Completely different movie in season 4. So if you're really liking it and you're not into the trend of stuffing liberal values into your throat and if you're not into evaluating a movie by how many of hollywood values they were able to pack into a single movie/season instead of by actors' work and beauty of the story, get ready to drop it by season 4. It became unwatchable just because of this cheap sale.