Phrases with «good lesson for someone»

I did not know all this about insulin, so very good lesson for me. (ericamesirov.com)
But that's someone else's world, not hers, so I think that it was actually a really good lesson for her. (thelast-magazine.com)
There are some very clever things going on that would be good lessons for tiny house builders. (treehugger.com)
(see all sentences)