There are several Mark Cohens out there. One of the more famous ones is a fictional character from the play Rent. This Mark Cohen is not fictional, he is a real-world inhabitant of Australia. This Mark Cohen spends his working time as the CTO of Domain Group – which is the most fun a job can be while still being legal. On weekends he may be found pottering in the garden, doing DIY stuff or meandering with family down Bay Parade with a coffee in hand. This is an entirely personal website, and all views expressed are solely are my own. Except maybe the ones about short-circuit evaluation in SQL which still seem to be popular.