My father and I used to do some carpentry together as a hobby. We worked well together because the things he might forget or neglect I wouldn't, and vice versa. Out motto was a variation of the carpenter's motto, " Measure twice, ASK SOMEBODY ELSE TO CHECK YOUR MEASUREMENTS, then cut once." For the many years we worked on rpojects together we never screwed up a build becasue of poor measurements. WQe now have several heirloom pieces of furniture (custom cherry cradle honoring the birth of my first son, for example) to pass on down the family tree.