"Every perception is to some degree an act of creation, and every act of memory is to some degree an act of imagination."
-- Gerald Edelman, Second Nature: Brain Science and Human Knowledge
2 How to invent Hindu-Arabic numerals？4 How to invent Hindu-Arabic numerals？How to invent Hindu-Arabic numerals？How can we develop transformative tools for thought？2020-10-18Journal
Indeed, it seems fair to say that any person who could invent Hindu-Arabic numerals, starting from the Roman numerals, would be both one of the great mathematical geniuses who ever lived, and one of the great design geniuses who ever lived. They'd have to be extraordinarily capable in both domains, capable of an insight-through-making loop which used the evolving system of numerals to improve not just their own mathematical ideas, but to have original, world-class insights into mathematics; and also to use those mathematical insights to improve their evolving system of numerals.