Crack

The damage specific to a person which allows the Anomaly to affect him/her. Cracks seem to be primarily psychological in nature, although severe physical trauma coupled with psychological strain has also been known to bring about a manifestation. Fanaticism is a potential crack.

There is also some evidence that gammas experience two cracks: a primary and a secondary. Originally, this was only mentioned on Chaz's LiveJournal, but it was recently referenced in the episode Lucky Day.

The team speculates on Ada Lovelace as a potential jammer in an entry on Daphne Worth's LiveJournal, with discussion of what might have caused her to convert:

Quote
''"So we're looking for someone with a mad on for smokers?"

''Reyes pursed his lips. "Breathing problems themselves?"

''"The crack the anomaly got through," Falkner said.

''"The crack?" Worth said. She looked like a spectator at a tennis match.

''"Stressors apply here, just as they do with other serial crimes." Reyes sounded like a lecturer with sixty seconds before the end of class. "That could be the weakness that allowed the anomaly a foothold."

''"Like your immune system failing to protect you from a cold virus when you're tired," Lau added.

--Worth learns a new bit of jargon, from the episode Breathe