In a shared house or flat, notes are often left to pass on information, claim ownership, or discourage others from eating your food (see I Lick My Cheese , a brilliant book). In a communal lab, notes are also left to offer instructions as to how the lab should run, pass on info, claim ownership and discourage others from nicking your stuff. I use a communal tissue culture lab where most people use the lab for limited amounts of time (30mins or so) to culture their cells and then they go elsewhere to do their experiments. My experiments involve me spending longer periods of time in the tissue culture hood (HOURS). On my own. It is mind numbingly boring. So we introduced a radio. A lot of labs have radios, this is not unusual (the lab next door has a radio, usually on so loud that we can hear the bass thudding through the wall, 'the party lab'). I didn't think it was a big deal, everyone in the tissue culture lab is pretty friendly and says hello to each other. The proto