Reid also claimed that this discovery of the link between the natural sign and the thing signified was the basis of natural philosophy and science, as pointed out by Bacon in his new method of discovery of the innate laws of nature.
Reid väitis ka, et ühenduslüli avastamine loodusliku märgi ja tähistatava asja vahel on loodusliku filosoofia ja teaduse aluseks, nagu viitas Bacon oma uues kaasasündinud loodusseaduste avastusmeetodis.