That is old. I, @rycharde, am working on the new Whitepaper, with Blurt devs.
Should be done in a few days.

We went through the calculations on another post - your graphic is almost correct but, as mentioned elsewhere in comments, one cannot see the actual values involved.

BTW there is always a curve, even if it is proportional. Indeed, by developing multiple curves one may start to approximate human interactions that are more subtle.