Continuity mistake: When Riggs is following the villains' pickup truck, they make a left turn into a highway and a Delta plane is spotted landing. In the next shot, definitely showing the same turn (note the billboard in the background for "CBS FM" which is in the same place, etc.) the plane changes into an American Airlines plane - note the disappearance of the "Delta" logo and word at the front, and that the Delta plane has a single thin red line, whereas the AA plane has a blue, white, and red stripe along it. (01:28:12)
Visible crew/equipment: As the motorbike falls from the highway, just after it explodes there's a very short wide shot of the site with Danny Glover standing by his car and a couple of guys in hard hats standing around (or running for their life). If you look right behind Danny Glover you can see two people, one in a white hat, one in a red, and one of them is holding a camera - they start moving backwards just before the end of the shot. We then see the bike blowing up, then a close up shot of Danny Glover, from the camera we've just seen. (01:30:25)
Answer: So what does it mean? "Nothing, " says screenwriter Jeffrey Boam. "It's a complete non sequitur. The (original) line was something like 'Close doesn't count, ' or 'Close only counts with horseshoes.' Dick (director Richard Donner) is a fun-loving guy," says Boam, "and this thought just popped into his head. He said, 'Let's have her say something completely off the wall.'" Boam, who wasn't on the set at the time, quickly faxed Donner a dozen meaningless lines that began with the words, "Close is..." Then the whole cast and crew started coming up with them. But the one they used came from Russo herself. "This is like some line from a Beatles song," says Boam. "I guess people are trying to figure it out."