25 years for acceptance are very well aligned with the timeline that Richard P. Gabriel has outlined in "Models of Software Acceptance": • Technology in the la

25 years for acceptance are very well aligned with the timeline that Richard P. Gabriel has outlined in "Models of Software Acceptance": • Technology in the lab (t=0) • Technology in the first company (t=2–10 years post-lab) • Technology in the first successful company (t=5–20 years post-lab) • Technology acceptance (t=10–25 years post-lab) Source: https://www.dreamsongs.com/Files/AcceptanceModels.pdf https://www.dreamsongs.com/Files/AcceptanceModels.pdf In these slides, Richard gives several examples that match this model and includes several additional explanations. For example: • First window system: Stanford/SRI/Xerox PARC ~1975, MIT ~1976 • First commercial use: Symbolics (1979), LMI (1979), Xerox Star (~1980), Apple Lisa (~1982), Apple Macintosh (1984) • First use by a successful company: Microsoft (~1989) • Technology acceptance: Microsoft (~1995) Spreadsheets are another example that is given in the slides. In fact, 25 years for acceptance are quite common in software. Sometimes, it also takes much longer.