Title: Effective Haskell - Kindle Edition
Chapter: 1 Section: Precedence, Operators, and Fixity

In the first expression, ((((((add add) 1) 2) add) 3) 4), the operations are evaluated from right to left, resulting in 10. In the second expression, (add ((add 1 2) (add 3 4))), the operations are evaluated from left to right, yielding the same result of 10. On the book the first expression is said to be from left to right and the second from right to left: the exact contrary. Could you please help me to understand?

Thank you,
Regards
Fabio