What an utterly lovable old man. If you can get past the little tiny classes he teaches, and his numbing monotone, he's really a terrific and super intelligent professor. He is very flexible in terms of bending the lecture towards your questions, rescheduling classes and tests, and not really caring when homework gets turned in. His tests and homeworks can be really deceptive....he's a fan of asking indecipherable questions that inspire you to do pages of pages of hopeful calculations, and then chuckling at how you really should have know that a meager 3 lines of calculations (and about 6 assumptions you would never have thought of) will suffice. It can be really vexing, but luckily he's a fair grader and gives a lot of credit if he thinks you knew what you were trying to do. Plus he really weights everything well (if everyone does badly on a problem he just doesn't count it...if you do badly and your friend does great, he'll count your friend's and not yours...sounds weird, but it works). He really knows his stuff and is pretty good at explaining confusing things....though sometimes he is very impatient and anticipates and thus answers questions that you weren't asking. A class with Duby can be super duper dreadfully boring, but if you can steel your sleepiness against his dragging lectures, you may learn a whole lot, and also get some wisdom from a guy who has been doing engineering for damn near eternity. And his name is Duby. The joy it brings to just say Duby-duby-doo as you walk into the class should be good enough.