During the OS/2 collaboration, IBM escalated a Tab-key navigation dispute seven management levels up while Microsoft delegated the decision to the engineer on-site.
Key Takeaways
Microsoft’s flat structure delegated UI decisions to individual engineers; IBM’s hierarchy required VP sign-off seven levels above the programmers.
When IBM demanded an equivalent-level executive response, the reply was: “Bill Gates’s mother is not interested in the TAB key” – ending the dispute.
The Tab key stayed as the field-navigation control, establishing a Windows dialog convention that persists today.
Raymond Chen frames the story as cultural mismatch: IBM as bureaucratic, Microsoft as undisciplined hackers – with acknowledged merit on both sides.
Hacker News Comment Review
Commenters were puzzled by IBM’s objection because IBM’s own 3270 mainframe terminals already used the Tab key to move between fields, making their opposition internally inconsistent.
The practical case against Tab-for-field-navigation surfaced: DOS used Enter, enabling one-handed numeric entry with a keypad – a workflow that still survives in Excel and data-entry contexts.
One speculated motive for IBM’s resistance: Tab-key field navigation may have been part of a patent IBM was pursuing, and Microsoft’s use would render the claim obvious and unpatentable.
Notable Comments
@ch_123: Documents IBM 3270 PDF (page 73) showing Tab used for field navigation – directly contradicting IBM’s objection.
@ChuckMcM: Suggests IBM’s opposition may have been IP-driven; describes IBM’s “Systems Engineers” role as purely advisory, never writing or debugging code.
