American plantations pioneered spreadsheet-based productivity accounting before most free businesses did.

Evidence

Like today’s titans of industry, planters understood that their profits climbed when they extracted maximum effort out of each worker. So they paid close attention to inputs and outputs by developing precise systems of record-keeping. Plantation entrepreneurs developed spreadsheets, like Thomas Affleck’s Plantation Record and Account Book, which was first published around 1850 and ran into eight editions; it circulated until the Civil War. Affleck’s book was a one-stop-shop accounting manual, complete with rows and columns that tracked per-worker productivity. This book “was really at the cutting edge of the informational technologies available to businesses during this period,” Rosenthal told me. “I have never found anything remotely as complex as Affleck’s book for free labor.” — Nikole Hannah-Jones et al., The 1619 Project, 571

Categorization

• XREF: Connects to the book’s reframing thesis that slavery was infrastructure, not periphery — the accounting innovation angle substantiates it. Also connects to Weberian/Braverman labor-management history (scientific management’s supposed 20th-century origins).
• DEFINE: Exemplifies the reframing argument’s empirical core: capitalism’s management techniques were developed on plantations, not imported to them.
• SEED: Essay angle: ‘Scientific management was invented on plantations’ — how Affleck’s manual predates Taylorism and frames slavery as the birthplace of modern accounting/management.