Odds are good that the millions of people who have also read and considered these ideas have added to what you came up with at 6. Odds are also high that people who have any interest in the topic will probably learn more by reading Descartes and Kant and the vast range of well written educational materials explaining their thoughts at every level. So if you find yourself telling people about these ideas frequently enough to have opinions on how they respond, you are doing both yourself and them a disservice by not bothering to learn how the ideas have already been criticized and extended.