 you can actually look up on the roof and you can identify where each of these pieces came from it's a system called track and trace and the folks who did it honestly it's the first time it's been done it's really astonishing i think it's something we're going to see in the future around wood and increasing use of wood it has to be more expensive that way you know we thought it was going to be a lot more expensive and i would say it was marginally more expensive but really it's worth it some critics wonder whether right now it is worth it