Editing Incubator escapee wiki:Historical archive/Policy/Notability/Arguments (section)

====Specialist topics are often not notable in the sense of being well known====
Many specialist topics are not "known outside a narrow interest group" (as stated by the definition of notability at the top of this essay) but are still perfectly reasonable encyclopedia topics.
For example, [[Darboux's theorem]] is not generally well known (nor does it need to be generally well known) but it is of great importance to people interested in [[differential geometry]].
Excluding it because it is non-notable would make Wikipedia less than the "sum of all human knowledge".
Even asking the average editor to figure out whether it is notable within the field of [[differential geometry]] is unreasonable
as those who are outside that narrow interest group have no reference from which to make that judgement.