Steven Pinker has consulted with Obama's speechwriters and has met heads of state such as Justin Trudeau.

Judge as of 2018-10-09. The claim has two parts: (a) Pinker consulted with speechwriters for Barack Obama; (b) Pinker met heads of state, including Justin Trudeau. True: credible records confirm both, including a meeting with Trudeau. Mostly true: both are confirmed, but a minor detail differs (e.g., he met Trudeau before or after Trudeau became prime minister, or the speechwriter contact was informal correspondence rather than a meeting). Mixed: one part is confirmed and the other is unsupported or contradicted. Mostly false: both parts are greatly overstated (e.g., a single brief handshake and an unanswered email). False: credible evidence shows neither happened.

Set before the research began.

1. E1 FIRST READING: Diversity mandates killing Canadian science, famed academic tells Commons committee National Post (via Yahoo News Canada) · 19 September 2025

   “Pinker has previously described his political alignment as "liberal Democrat" and once told a writer for the Harvard Crimson that a framed candid photo of him meeting then prime minister Justin Trudeau was "one of my proudest possessions."”

E1, an independent National Post report, says Pinker told a Harvard Crimson writer that a framed photo of himself meeting then prime minister Justin Trudeau was "one of my proudest possessions." That supports part (b), though E1 gives no date for the meeting or the interview. No evidence addresses part (a), that he consulted with Obama's speechwriters. With one part supported and the other unsupported, the criteria point to mixed.