If you are half intelligent and somewhat mechanical heating systems are not rocket science by any stretch of the imagination.

I complete ignore it for any calculations because you just cannot come up with a value that has any science behind it.One factor I will agree with is principal paydown.

It’s definitely not rocket science.

This isn’t rocket science .

Please don't take it personally, but this just sounds like one of those instances where a man is doing the science without actually taking the time to ask the women who actually are living or doing the study in question - what their reality is.But, even so, even if you regularly fill the dishwasher in your home and otherwise wash all kitchen-related things - do you not first hand-wash or rinse most items prior to putting them into the dishwasher? 

This is fascinating, and something I will look into after shampooing the carpet (which my cleaning lady can do).

But Sackrete's concrete patcher is better than Quikrete's, the two most readily available solutions.Concrete is not rocket science.

oh okay,  but its cute that you're a physician who thinks he knows about the science behind airborne smoke remnants 

This business is not rocket science.

@Sanjeev Advani , fascinating stuff!