How on earth does one get to find solutions to problems of his field, borrowing techniques from a totally different world? Get cross-trained in everything? Get double/triple degrees? Which other fields to "invest" in?
And of cos, the sharp-minded skeptic will see through my veiled attempt to qualify the much time I spend reading stuffs totally unrelated to my immediate work everyday. But, if one can be opportunistic about his chances in 4D/Toto, why not a little faith in how 20%-rule type of serendipity can benefit?