In Stalinist Communism
is an expressed belief which is not in accordance with official party doctrine for the time and area.
A deviationist is person who expresses a deviation.
The Ffestiniog Railway
found another use for the word "Deviationists", for the gang of voluntary enthusiasts who formed the construction gangs to build its deviation
. (Following British railway terminology, a deviation
is a new route between two points taken as a result of the original route becoming unusable, for whatever reason. A much earlier 19th century example was in the Borough of Crewe
where the Crewe to Chester
line was subject to a deviation.)
Since the Ffestiniog, several heritage railways have found themselves in similar situations, and have had to muster great volunteer efforts to overcome physical and geographical difficulties.