Honestly, I think Nostr has the smartest users. 

You can throw any complex or controversial question, and you'll always get some of the most thought-provoking answers. 

Examples below:
nostr:nevent1qqsf08z96http87rxexqqt7rtw38meszvdh06xruhhr0eswj77k2fyqppemhxue69uhkummn9ekx7mp0qgsvdac80utfn4gvly4fv54la0l6cp0udpptnm3ezzyajkdc44w53lgrqsqqqqqpqw7av5
nostr:nevent1qqszq5fpsyxce4ha9n2etzenlswgj9wp560l3haf2rwtt4m65p50htcppemhxue69uhkummn9ekx7mp0qgsvdac80utfn4gvly4fv54la0l6cp0udpptnm3ezzyajkdc44w53lgrqsqqqqqprzeafj