Dangerous Curves is an okay episode. I have watched 7 other Season 20 episodes and there was 1 okay, 3 okay, 3 good, and 1 really good. This episode falls in the okay category. There is two stories in this flashback episode. One is okay and one is kinda bad. The stories are constantly rotating at unnecessary times. I just think that they should have tried to do the stories one at a time with no interruptions at all. I will give mini reviews for the two flashbacks.
Flashback #1. This was the kinda bad flashback. As another review pointed out, It ruins Simpsons history, but I guess this episode should be considered non-canon. But still. Also the episode just ends. That's what really annoys me. It feels like they just forgot about this flashback. In all, I give this a 5.6 out of 10.
Flashback #2. We have seen this happen to Marge and Homer a billion times. This flashback isn't good, but it isn't bad. An okay flashback. In all, I give this a 6.2 out of 10.
This episode experiences too much breaks in the action. This isn't the best of the season but this isn't the worst of the season. So far though, this aims at closer to the worst. In all, I give this a 6.1 out of 10.