It's the government, you may as well have another set of people observing the test givers as well.

I'm reminded of an anecdote I once heard, which I can't readily find atm, that in the days of yore when Chicago dominated the pinball industry, the same complex also dominated the slot machine industry. This business was later purchased by Bally's and moved to Las Vegas, where it appears the book picks up. Along with the business came the statistician whose job it was to make slot machines addictive. He later came out of retirement to work for Tinder. Don't really know if that last part is true, maybe someone here does.