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by sudhirj 2798 days ago
The placement of keys in such s way that they had a low probability of jamming (whether effective or not) has heavy parallels in designing building entries and exits, planning emergency exit capacity etc. Basically if you’re planning an exit also consider human usage statistics of the connected rooms.
2 comments

> The placement of keys in such s way that they had a low probability of jammin

It's highly debatable, and arguably a myth. The QWERTY design predated any potential jamming problems. Perhaps it was so foreseeing? It's really hard to believe general ergonomy was the top priority, as all the characters of the word TYPEWRITER are placed in the top row, which could have hardly happened by sheer coincidence, but was very convenient for the sake of sale presentations in the early years...

>The QWERTY design predated any potential jamming problems. Perhaps it was so foreseeing?

https://www.smithsonianmag.com/arts-culture/fact-of-fiction-...

Apparently it was partly publicity stunt, partly defined through feedback received from actual users.

> This theory [jam avoidance] could be easily debunked for the simple reason that “er” is the fourth most common letter pairing in the English language

Argh, no. E and R are separated by D, 4, and C. It would be nice if someone writing about typewriters actually looked at one.

The bar-adjacent letter pairs, from most to least frequent¹, are MI BY CR NU HN XE HM AZ DC GB ZW VT FV SX.

¹ https://gist.github.com/lydell/c439049abac2c9226e53

But if you're an architect skilled in designing vomitoriums, or whatever, then how does adding the mythological QWERTY design add to that.