you do realize blowing on the cartridge works just as good as not walking under the ladder and avoiding black cats? As a matter of a fact it contributes to connector oxidation (moisture in your breath).
The blowing on the cartridge myth was always funny. People still think they have to do it.
The actual trick is to stick the game in, and after you push it down, you then slide it with your finger to the left or right about a half-centimeter to align the pins correctly, hit reset, and it's good.
It improves surface contact. That it works isn't a myth at all. Many people mistakenly put the blame on dust, thinking that blowing on it remove the dust which made it work.
It's not great for it in the long term, though, but hardly as damaging as much of the smug internet would want people to believe.
the ironic thing is that tidbits like this are a great way to teach young kids about science. instead we just had to hear about how video games made you stupid and ruin our cartridges by blowing into them or snapping them into place.
I did it as a kid, felt silly after I discovered that it didn't work as an adult, then more recently discovered that it DID actually work. Or at least, it's been sufficiently successful for me (repeatedly putting in cartridges in NES/SNES/N64 without successful start, blow in them once, immediately starts working).
