Dave ,

It is disappointing that GT is using facebook for distributing lessons. Facebook colaborated with Cambridge Analytica to steal peoples contact lists (without permission or knowledge of the people who made those lists) and then use that info to steal the last presidential election. They have done this for ulra nationalist organizations all over the world. It is public record, you can look it up yourself .. ( for example...watch The Great Hack on Netflix. ) Not to mention their refusal to stop publishing hate mail and out and out racially motivated lies. This is not a neutral entity, working for the public good.

Please stop supporting this platform by publishing lessons there.