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in most fields Leonardo was an autodidact, describing himself as "a man without learning", although saying his learning is from doing rather than texts.

Clustered polymath have certain pockets of knowledge and some examples are Patrick Geddes, Otto Neurath, Donald T Campbell,

Leonardo Syndrome : he was nootirus for bringing many projects but bringing few to life, yet alone even writing about them.

Polymaths have been called amateurs, dilettantes or even charlatans

information overload, with the printing there was an anxiety that there is too much to know. Leibniz wrote a horrible heap of books that is constantly increasing, Adrien Baillet feared the return of the barbarism as a a result of th ebooks increasing in multitudes, This lead to fragments of knowledge and the anxiety as well as praise and derogatory... See more

Omniscians was coined by Gabriel Harvey, other 17th century where this feature was important and coined by many terms ...are polymath , polyhistor, polygraph (deragotary). another term virtuoso refers to scholars collecting a variety of objects. in latin, scientia universalis, pansophia, polymathi. versatile in Italian.

Kircher tried to do much , complaining in one occasion he was too busy that he did not know which way to turn. Christopher Wren even if he finished St pausl is another person with many projects unfinished. 17th-century individuals where it starts of accomplished individuals having too many things to finish.

Passive Polymaths Borges, Huxley, Borges, Sontag, all mention reading encyclopedias as a child.

The territorialisation: Starting from medical, universities divide their staudies into subgroups in the 19th century. In English speciality is coined as a word. territorialisation and tribes start referring to the work as "my field", or for historians "my period"