From the measurement desk
Written for the question you actually typed.
Each piece answers one owner question in the owner's words, with the measured data we have and arithmetic anyone can check.
Why do people sign up for a free class and just... not come?
Because free costs nothing to abandon. The impulse-decay mechanics, the pre-event sequence that holds a show rate, and the same-day recovery that saves the rest.
How do I ask trial attendees to join without feeling like a used-car lot?
The ask that reads as hospitality: timing, wording, and the sequence that does the persistent part so you never have to.