You're right to be skeptical, but:
> They paid a total of 2 people $50,000.
That's over half a million, in today's dollars.
With inflation, and whatnot, we get numb to what money was, back when.
> They paid a total of 2 people $50,000.
That's over half a million, in today's dollars.
With inflation, and whatnot, we get numb to what money was, back when.
> To conduct the literature review, the sugar industry paid the Harvard scientists the equivalent of $50,000 in 2016 dollars [...]
So it was actually about ~$5,000 in 1965 dollars.
(…your figure works out to a 26% per annum inflation rate. The $50k figure is in 2016 dollars — "the sugar industry paid the Harvard scientists the equivalent of $50,000 in 2016 dollars".)