Based on the given tweet, determine the level of sadness the author is experiencing. Choose from the following options: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
Tweet: @jwonder81 @MacadamionNut well of course.Progress for the sake of progress must be discouraged. The problem is the substance of the rhetoric
0: no sadness can be inferred