A good, profound, solid work. Yet I am not sure about changing the real story by adding a fictional idealistic character of Ulana Khomyuk or making Dr. Legasov a witness at the trial he never participated in. Also, in my opinion, the story would greatly benefit from showing the obligatory May 1st demonstration in Kiev strongly encouraged by the government. I still remember unsuspecting smiling young mothers with strollers shown on the state TV as reassurance that there was no danger in being outside. That would be a powerful and teachable moment.