 FACT: In explaining quarks to C.D., Roxanne (an Astrophysics PhD  student who should know better) mentions that there are six types of  quarks and that the "top" and "bottom" are the most common kinds.  She meant "up" and "down" (which form protons and neutrons).  Experimental evidence for the predicted "top" quark was not  announced until 1995, 8 years after the films writing.