Light bulb Posted on October 23, 2018October 23, 2008 by admin Q: How many laboratory heads (senior researchers, etc.) does it take to change a lightbulb? A: Five; one to change the lightbulb, the other four to stand around arguing whether he/she is taking the right approach. Spread the love Related posts: In The Beginning… All objects in the world My friend called his car insurance company Itemized Engineering Fee