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Leap Technology

aamoviebb · 24.8K views · 2011-04-23 · 17:34

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Overview

A promotional video for Leap, the navigation technology invented by Jef Raskin, demonstrated on the Canon Cat computer around 1987. It shows keyboard-driven search and cursor positioning in place of a mouse.

On Hacker News

HN uses it as the visual reference for Leap keys and Raskin's interface ideas whenever jump-to-text navigation or command palettes come up.

Recommended by 2 HN people across 2 months · HN mentions 2014–2026

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What people said

marttt · 2020-01 · Recommendation

More on the Canon Cat: [LINK] [LINK] There are also a few previous HN discussions on this machine. EDIT: I just have to post this lovely scene from the original video separately. This is about human-computer interaction after all, isn't it! [VIDEO] Aren't we actually approaching an age where this kind of (almost-)single-purpose machines might be making a comeback? The focus this model seems to allow or enforce on the user feels kind of... healthy.

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fzzzy · 2016-09 · Recommendation

I had read a lot about the Cat, but never saw it in action, so I decided to look for a video. This is a fascinating view into Raskin's user interface concepts. The world might have been a very different place if Jobs hadn't interfered with the Macintosh project. [VIDEO]

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OhMeadhbh · 2026-04 · Reference

Meh. the Lisa was absolutely, positively, explicitly NOT a Mac. If you don't get that, then you misunderstand the business of computing in the late 70s / early 80s. The author also ignored Jef Raskin's work on the original Mac project (I wrote a serial driver for him in the early 80s for a 6809 prototype he was working on.) If you're going to make one of these Mac hagiographies, it's useful to point out the Canon Cat (which was more in line with Jef's original idea for the Mac) and then point out how different it was from main-stream Macs. And then point out WHY the Lisa was not a Mac. So... Why do people think the Lisa was a prototype Mac? It's easy to understand the confusion. It has a 68k processor, a mouse and a bitmap screen. It was even used as a development platform for the original Macs. But it is not a Mac. The Lisa didn't have "apps" and "files" in the same way we think about them. It had "tools" and "documents." The Lisa was strongly influenced by the Xerox Star. And while it's not exactly true to say the Lisa was Apple's version of the Star, there was definitely a strong resemblance. The Lisa (and the Star) came with all the functionality it would ever have built into the system. (This restriction changed later, but when launched, it was considered a complete system.) It had "apps" in the sense there were tool icons you could (double?) click to create a blank document of a specific type. But it took Apple over a year to decide they wanted to give third-parties the

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Sources

Video by aamoviebb, played through YouTube.

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