Ian famously, he said, everything flows, which is not the same as everything changes. And it reminds me of another qut you be touched a number of times in the book, alfred north whitehead, as we think we live. Well, obviously, looking at the way that we're living, that suggests that there ther's, alms, certainly something wrong with the wayw we're thinking as well. Speaking of sort of philosophers, i i was interested, you touched briefly on the book on heraclitus. You speak about sort of plato almost having two paths to go down, either going after sort of parmenides or heracl Titus. Can you just briefly