How could they know about Rubik's Cubes
I am not usually bothered too much about this kind of error, but since Super 8 is supposed to celebrate those years, I found it a bit strange that they should get something like this wrong.
Now, I stand to be corrected, but if the film is set in Summer 1979 and Rubik's Cubes (invented in 1974) were only licenced to be sold as a toy in the USA in 1980, would you expect 5 random kids in a small town to know about them?