Why modelling when you can draw on a white board

I came across this pretty fancy blogger that states that it's better do draw on a white boards "A "plain old whiteboard (POW)" is my favorite modeling tool". It then says that since these might useful to others they can be captured in a picture "We took the photo because we were afraid that we’d lose the valuable information that it contains". It's so valuable that it deserves a picture but not enought to be modeller in a tool.
Finally he shows that in order to clean the picture from the nasty reflection he used a painting program to manually remove the spot.
Another guy in a forum states "...but I use white boards. Keep many of them around so that they don't have to be erased".

No comment here. Let's say what will the future tell us.