If you have been in the model railroading hobby for any considerable length of time you may have come across a modeller or 3 who have a passion for getting everything on their layouts to be an exactly copy of the prototype. I have never been one of those fastidious modellers and would probably be best described as a modeller who seeks to make a scene realistic enough but couldn't be bothered getting it exactly like the prototype. But from time to time, when installing trees on a layout I bend a trunk and the tree has what some (including myself until the other day) would consider to be an unprototypical bend in the tree trunk.

Consider this picture, shot on Sunday 3rd January, 2010: