So Professor Buser, what did you plan on doing as a side occupation after your expert witness career? Judge Posner wants to know:

Buserís initial report proposed that if permitted by Allmerica to continue its market-timing trading, Emerald would have earned an annual rate of return on its investment
of 34 percent for 20 years, for a discounted present value of $150 million. That was a preposterous estimate, properly excluded by the district judge under Fed. R. Evid. 702. . . .
Buserís first report was so irresponsible as to justify the judgeís decision to exclude the second report summarily. Buser had demonstrated a willingness to abandon the norms of his profession in the interest of his client. Such a person cannot be trusted to continue as an expert witness in the case in which he has demonstrated that willingness, and perhaps not in other cases either.