Roger Marshall charged his patients 18% annual interest on their unpaid bills. His bakery bill for $678.75 was due six years ago. At 18% interest compounded annually, the total he'd owe would be at least $1,800. Marshall just paid the bakery $1,300—far less than what his patients would owe. RE: https://bsky.app/profile/did:plc:sgti3jsgu3luif24tokvth3a/post/3mxkgmh324s2d