No one ever said that these walking gant chart guys were employed for having any relevant knowledge! (including maths, or the ability to read gant charts)
have a backup driver... I've been told that they make you sign a waiver saying that you wont drive for something like 24hrs. they also make you wear gloves to eat it.
A minor blasphemy, easily forgiven (We did have a Milton Reformation).
Going elsewhere or some other time and then saying "X was > Green > *" is a different story.