Building B operatives visit the SF loft

Marc, representing the mysterious Building B, writes in email:

"The test plan is converging; we'll be making measurements either Saturday or Sunday."

I guess it didn't happen until today, but I missed it since Aaron and Olya are staying in the loft this week and were able to let them in. I stayed in Palo Alto to coach Owen's NJB basketball team, and later see Stanford defeat Washington State in an exciting overtime game.

The suspense is killing me—what did they measure? I don't want them to have to kill me to find out, though.