Q: How many laboratory Posted on August 21, 2017August 21, 2009 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: Q: How many Australians does Notre Dame Students Q: How many American Q: How many terrorists