Scientists almost always state the degree of certainty they have with for each claim that they make, along with backing evidence. That is why science works, because they depend on others to criticize them and to improve on previous discoveries instead of holding on to false beliefs due to tradition.
On the other hand, theologians constantly make claims of 100% certainty even in their most clear cut bullshit claims, even for events thousands of years ago for which there is no surviving evidence.
"Lighthouses are more useful than churches."- Ben Franklin
"Religious bondage shackles and debilitates the mind and unfits it for every noble enterprise."- James Madison