Older people tend to get stubborn and resist everything, any change, especially on their gardening website is unwelcomed. But if we are forced to accept the change most times we realize the change is actually better. Most of the resistance comes from being lazy and not wanting to learn new ways. If that behavior was shown in our children, we would lecture them and ask them if they wanted to grow up to be old and ignorant, we would try and encourage them to keep up with the times so job opportunities would not pass them by. Yet, for some reason older people seem to accept such stubborn resistance and laziness for themselves. I think that if we as a group of older people decided we would learn the metric system that there would be very few who could not do it in a very short period of time(if it were put into actual daily use where we had to use it). Then we would not be bothered by the aggravation of having two systems and would not need conversion charts in the shop or kitchen anymore. I confess that I am not very good with the metric system, I do know the basics and if we converted to the metric system feel I could learn that with everyday use pretty quickly. I have tried to learn Spanish in my old age, not very successfully I admit. Of course I took French in high school and never was very successful with that either. When I was young I stayed with my german aunt and her parents, picked up German pretty quickly. But after years of not using the language it all vanished from my memory. The point being we don't tend to learn things that we don't use on a regular basis