> Because knowledge is currency can I sell it? Can I buy grocery with knowledge? Knowledge is a tool! And it's not even universally true, if you know Americ

> Because knowledge is currency can I sell it? Can I buy grocery with knowledge? Knowledge is a tool! And it's not even universally true, if you know American English it is perfectly useless in rural China or Japan or Central Africa. EDIT: I'll add another example that won't upset the American audience. Numbers in French. We are used to the decimal system, it won't work in France, they count numbers using the vigesimal system. So 84, 80 + 4 is quatre-vingt-quatre, 4 x 20 + 4. My way of counting numbers, which is a basic requirements for kids aged 5, is completely useless in France, even though France is a close Neighbour of my country and we dealt with each other since the dawn of history.