If operator AND is used, both statements must be (TRUE), so that the combined statement is also (TRUE).
Politicians cause problems AND 2 + 2 = 4) (TRUE).
Politicians solve problems AND (2 + 2 ≠ 4) (FALSE).
Now an applied example with somewhat more reference to reality:
Politicians cause problems AND Politicians solve problems (FALSE).
If operator OR is used, at least 1 statement must be (TRUE), so that the combined statement is also (TRUE). - Applied example:
Politicians cause problems OR Politicians solve problems (TRUE).
BOOLEAN LOGIC IS FUNDAMENTAL TO MODERN COMPUTING!
For you too! E.g. when you are searching in GOOGLE!
With BOOLEAN OPERATORS you will find a lot easier what you're looking for!
By use of operator AND, your search becomes more targeted!
By use of operator OR, your search becomes somewhat less specific!