One afternoon when I was 9 my dad told me I'd be skipping school the next day. Then we drove 12 hours from Melbourne to Sydney for the Centenary Test a once-in-a-lifetime commemorative cricket match. It was great fun - especially for a kid who was a massive sports fan.
Bottom up thinkers try to start from experience and move from experience to understanding. They don't start with certain general principles they think beforehand are likely to be true they just hope to find out what reality is like.