An irrationally motivated arsonist is called a pyromaniac.
A pyromaniac is a person with a mental disorder who find happiness in setting things/people on fire with the aim to destroy/hurt/kill them. They will usually continue setting things on fire until they are apprehended because it brings them irrational joy.
The person given credit for the first modern atomic theory was John Dalton. For him, all of the objects present is made up of atoms and that these atoms cannot be destroyed and divided. Also, in this theory, compounds are made up of having two or more atoms that are combined. Although this has been the very first and old theory, it is still valid in modern chemistry.
Answer:
Fundamental attribution error; Responsible; Foolish
Explanation:
The fundamental attribution error is our tendency to explain someone's behavior based on internal factors, such as personality or disposition, and to underestimate the influence that external factors, such as situational influences, have on another person's behavior.