He is endlessly willing to rethink things from a truly clean slate. It’s astonishing how simple things become when you’re willing to do that and design something bottom up with that perspective; the “bottom” being raw silicon. He said in his talk that the colorForth compiler is “a dozen or so lines of code.” This is shocking to most people. It’s because tokenization is done at edit-time and there is almost a one-to-one correspondence between the primitive words in the language and instructions on the chip. The compiler is left with not much to do other than maintain the dictionary and do very straightforward instruction and call/jump packing. This “brutal simplicity” is possible because every aspect has been rethought and carefully orchestrated to work perfectly together. Every convention is open to change.