In these days of measuring the productivity of everything and everybody, it is of great importance for our researchers to demonstrate how efficiently they utilize their resources. An often-recurring bone of contention is consequently ``who can do most with the least?''
At one such set-to, a mathematician claimed that mathematics was the least wasteful, saying that ``we need only three inexpensive tools for our research: Paper, pencil and waste basket.''
``Bah!'' exclaimed the resident philosopher, ``we don't even need the waste basket!''