True scientific police work.

Reason Magazine - Hit & Run > Drunken Journalism:

"She then says that the police officers who helped her with the story told her that 'how a drinker scores in a field sobriety test is the real measure of inebriation.'

In fact, this simply isn't true. The standard field sobriety test was adopted by NHTSA after one poorly administered test on 238 subjects in 1977. It's never been peer reviewed. One forensic expert in Georgia gave the test to 21 of his students, none of whom had a drop to drink. He then showed video of the tests to a group of police officers. They said they'd arrest nearly half of them."

It's all just made up, I swear to god. Every last bit of everything.