I think it's possible to get better at conceiving of vast quantities, I'm curious about how to practice that. @AstroKatie do you have any ideas on the art of fathoming?
Did you read Three Body Problem? Liu wrote in the epilogue about her natural ability to grok the extremely small and vast and it... ...really turned me off. Synesthetes aside, it just seemed inconceivable. Ever meet someone who professed the same ability?