The appeal in constructing anagrams lies in the balance between the extreme confinement of working with a fixed set of letters and the tremendous room for exploration afforded by all the permutations of those letters. If I were required to write a poem, without any restrictions on the form or content, my brain would quickly enter a state of paralysis; for without constraints on the assignment, the possibilities are infinite - and overwhelming.
Stern, Harry L.
Word Ways: Vol. 27
, Article 10.
Available at: http://digitalcommons.butler.edu/wordways/vol27/iss1/10