I appreciate how the example collision (page 18 in the email dump) uses the lyrics of "Push it to the limit" by David Hasselhoff. The number 9 seems to be appearing a lot both in the collision raw text and previously when they refer to the bleed. I guess it has something to do with the function being based on trinary logic - could there be another flaw there related to this?
Also kind of amusing seeing the different sides of the IOTA team: Sergey is antagonistic and difficult to communicate while David tries to smooth things out and get everyone to play along nicely.