My lesson? A lesson from YOU?Jacques,
One more comment about endangered species. And that is the piano manufacturing industry stopped using ivory on their keys decades ago.
They still use ebony for the blacks, but the ivory tradition was scrapped a long time ago, They now use some sort of plastic instead for the whites. It is very consistent and durable and has no bearing on sound.
That's your lesson for today.
Would Stradivarius have liked "some sort of plastic?"