Scientific Principles of the 19th Century

Question 1

What did William Jevons contribute to modern science?

Answer 1

Jevons introduced the Principles of Experimentation, emphasizing:

Testing hypotheses through experiments.
Identifying variables:
Independent variable – The factor you change.
Dependent variable – The factor you measure.

Question 2

What was Jevons’ view on scientific certainty?

Answer 2

Jevons stated that science never offers absolute certainty — only probabilities that suggest one interpretation is more likely than another.