I loved this show, and only recently was 'caught up' watching it. Checking it out, I would say, it was very good, ... with Bill Cosby very cool, and amazing person. You can tell his genius is there, ... even back in the late 1960's. Watch this if you want to learn something! In my view, the people who might watch this will learn about science, good ethics & skills, and how people lived and behaved, --- nothing too unusual, back in the late 60's. I thought about buying the entire series, ... and will do so when I have a chance to go through all 50+ episodes that were produced.