How conversions are verified
The binary and ASCII arithmetic in the tool and in the guides is not a matter of opinion: it follows the ASCII standard published in 1963 and revised in 1968, which is also the basis for the first 128 Unicode code points. Every worked example on this site, such as 01001000 01101001 decoding to "Hi," is computed the same way the tool itself computes it (character code to base 2, padded to 8 bits) and then checked by hand against the ASCII table before publishing.
Historical and technical claims outside the pure arithmetic, dates, names, thesis titles, transistor counts, are sourced individually. Where a specific source is cited in a guide (Claude Shannon's 1937 MIT thesis, the RFC for HTTP headers, IBM's code page 437 documentation), that citation is the source Marcus Vance actually checked, not a generic reference added after the fact.
Update cadence
Guides are reviewed whenever a cited standard changes (a new Unicode version, for instance) or when a reader-reported error is confirmed. There is no fixed monthly review schedule; a page with static, standards-based content like ASCII values does not need one. The "Updated" date in each guide's byline reflects the last time the text itself changed, not a cosmetic touch.
Corrections policy
Report a suspected error through contact with the page URL and the specific value or claim you think is wrong. Corrections to arithmetic or ASCII values are checked against the standard directly and usually resolved within a few days. Corrections to historical claims are checked against the cited source, or a comparable primary source if none was cited, before the page is changed. If a claim cannot be verified one way or the other, it is removed rather than left in an unconfirmed state.
Chris Terry reviews disputed corrections that Marcus Vance cannot resolve alone. Neither of them publishes a change to a guide without checking the underlying source first.