Because it's graduation day and visiting assistant professor Luc Boisert will be wearing an important message concerning the organic chemistry of benzene for the Reed Class of 2012.
Luc's t-shirt, which was well hidden underneath his black ceremonial robes, was made for him by Cole Perkinson '13 and other students. The graphic was copied directly from one of the PowerPoint slides that Luc had displayed during his Chemistry 202 lectures. Read and learn! Electrophilic aromatic substitution is IMPORTANT.