As in the case of lines, you are likely to stop when you are no longer sure you should go further – at the rear edge of the region of uncertainty.*
Daniel Kahneman

Categories too often become where thought goes to die. That is, where there’s a widespread tendency to act as if once something has been categorised, no further consideration is required. But, often, it is.**
Rebecca Solnit

What are we completely certain of?

Great institutions crumble,
People surprise us, this way or that,
Nature is far smarter than we once thought,
And this is not the future we imagined
fifty, twenty, or even
ten years ago.

Only through exploration and discovery of
the people we have the potential to be – and we have
no idea what our limits may be –
Will we be able to navigate the brisk uncertainty, rather than
shrouding ourselves in dusted, airless certainty-cum-categories.^

*Daniel Kahneman’s Thinking, Fast and Slow;
**Rebecca Solnit’s No Straight Road Takes You There;
^I primarily write this to myself.