When the French national railway company revealed it had ordered 2000 trains that were too wide for most of its stations, it was roundly criticized. But, it turns out, mistakes are not uncommon, even in the precise world of science.When the French national railway company revealed it had ordered 2000 trains that were too wide for most of its stations, it was roundly criticized. But, it turns out, mistakes are not uncommon, even in the precise world of science.