because of the limitations imposed by observation, there is a well defined path that connects Archimedes to Galileo, and Galileo to all the other scientists that came after him.
This path has been discovered by many trials and errors (mostly errors) and the elimination of deviations from that path. As a result, science has certain rules and characteristics, the violation of which leads to non-science, pseudoscience, and anti-science. Rules are also present in other human endeavors such as art and literature. If we were allowed to have a totally open English literature, then “addm ewrg tyu olpi opet, qytr kryt betro” would have to be allowed as an English sentence! Sheldrake’s science is nothing but a “addm ewrg tyu olpi opet, qytr kryt betro”!