The scrapbooks reveal a critical and analytical way of thinking and emphasis on experimental evidence in physics, through which he became one of the early founders and advocates of modern scientific methodology. The more experience and experiments are accumulated during the exploration of nature, the more faltering its theories become. It is always good though not to abandon them instantly. For every hypothesis which used to be good at least serves the purpose of duly summarizing and keeping all phenomena until its own time. One should lay down the conflicting experience separately, until it has accumulated sufficiently to justify the efforts necessary to edifice a new theory. (Lichtenberg: scrapbook JII/1602)
Georg Christoph Lichtenberg used his notebooks as thinking tools with respect to scientific methodology.