There are also more objective factors which can render dialects incomprehensible.
The Lapp language is spoken over an area which encompasses
four different countries. There are seven main dialects, some of which are
mutually incomprehensible, so that a Lapp from Finnmark cannot understand
one from Tr0ndelag (Norway). One of the reasons for this is that
different languages are used as sources of loan words. As Finnish and
Norwegian belong to two completely different language families (FinnoUgrian
and Germanic), any loan words taken from them can only widen the
already existent gap between the two Lapp dialects (Aarseth, 1969).