Abstract
The title I have chosen for my personal recollections describes, in a nutshell, the direction my scientific endeavors from the time of my Ph.D. thesis, which I began in 1970, to the present day. Over the years, I have changed fields a number of times. There were periods when I was preoccupied with the development of methods; at other times, the focus was on biological problems. Science can be advanced by new hypotheses about how things work, which can be tested and proven right or wrong, and by new methods which enable us to tackle questions that we were unable to address with the existing methods. Or, as Richard Feynman put it, “Science means, sometimes, a special method of finding things out. Sometimes it means the body of knowledge arising from the things found out. It may also mean the new things you can do when you have found something out, or the actual doing of new things. This last field is usually called technology. . . .” (R.P. Feynman in the John Danz Lectures, 1963 [Feynman 1998]).
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