Library.

“Historical rolling-return data for the S&P 500 Index show negative returns in 46% of one-day periods, 38% of one-month periods, 25% of one-year periods, 16% of three-year periods, 10% of five-year periods, 6% of 10-year periods, 2% of 15-year periods, and 0% of 20-year periods.”

The historical pattern is well supported: negative S&P 500 rolling returns became substantially less frequent as holding periods lengthened, and most listed percentages are close to published estimates. However, results vary with the sample period and return methodology, and several sources report 0%, rather than 2%, for 15-year periods. The claim is therefore broadly accurate but overly precise.

“In 2001, Microsoft and the U.S. Department of Justice reached an antitrust settlement that required Microsoft to change certain business practices, share technical information with third-party software developers, allow flexibility in configuring Windows, and submit to oversight.”

The record supports the substance of this claim. DOJ and court documents from 2001 show the settlement required conduct changes, interoperability disclosures, OEM flexibility in how Windows presented competing middleware, and compliance oversight. The main caveat is wording: the disclosure duty covered specific interfaces and related interoperability information, not all technical information broadly.

“Microsoft instructed approximately 100,000 of its engineers to stop using an AI coding tool by the end of June 2026.”

Microsoft did tell some engineers to stop using Claude Code by the end of June 2026, but the evidence does not support the claim that this applied to about 100,000 engineers. Reliable reports describe a division-level change affecting thousands, not a company-wide order across Microsoft’s engineering workforce.

“Microsoft instructed its engineers to stop using an AI coding tool because the tool's usage costs were higher than the cost of paying the engineers.”

Microsoft did reportedly curb internal use of Claude Code and move engineers to GitHub Copilot CLI because costs were rising. But the stronger claim that the tool’s usage cost more than paying the engineers is not established by the available evidence. That salary comparison appears to come from a narrower contextual remark, not a documented company-wide finding or the clearly stated basis for the policy.

“Five major tech companies, including Anthropic, OpenAI, and Microsoft, have launched AI chatbots specifically for consumer health support in 2026.”

The specific claim that five major tech companies launched consumer health chatbots in 2026 is not supported by the evidence. Multiple credible sources confirm dedicated health AI products from only three companies: Anthropic (Claude for Healthcare), OpenAI (ChatGPT Health), and Microsoft (Copilot Health). A possible fourth (Amazon) is weakly documented by a single source describing a different type of tool, and no fifth company launch is substantiated. The numerical assertion — the claim's defining element — is unverified.

“Windows 12 is scheduled to launch in 2026.”

Windows 12 is not scheduled to launch in 2026. The rumor traces back to a single PCWorld article that was retracted by its own publisher for failing editorial standards. The highest-authority tech outlets — Windows Central and PC Gamer — cite direct Microsoft sources confirming there is no plan to ship Windows 12 this year. The "Hudson Valley" codename fueling speculation was actually Windows 11 24H2, which already shipped. Microsoft has made zero official announcements about Windows 12; expert projections point to 2027 at the earliest.