Much of the best scientific research of today shows that many of the results of earlier scientific work that was regarded in its time as good are in fact mistaken.
Given that ....
Much of today's best scientific research shows that results of earlier scientific work was mistaken.
And that ....
Scientists above all are concerned about discovering the truth.
How can it also be that ....
It's valuable for scientists to study firsthand accounts of earlier scientific work.
Evaluate / Goal
If scientists are primarily trying to discover truth, then why is it valuable for them to study earlier scientific work, which we often find out is mistaken?
Let's look for something scientists would get out of studying firsthand accounts of potentially-mistaken work that would help them in their pursuit of truth (maybe they learn what not to do?)