A Los Angeles Times article on “Why text messages are limited to 160 characters” reveals an interesting connection between old and new media: Friedhelm Hillebrand, the man more or less responsible for this figure, consulted postcards in his search for an ideal length for short messages.
Initially, Hillebrand’s team could fit only 128 characters into that space, but that didn’t seem like nearly enough. With a little tweaking and a decision to cut down the set of possible letters, numbers and symbols that the system could represent, they squeezed out room for another 32 characters.
Still, his committee wondered, would the 160-character maximum be enough space to prove a useful form of communication? Having zero market research, they based their initial assumptions on two “convincing arguments,” Hillebrand said.
For one, they found that postcards often contained fewer than 150 characters.
Second, they analyzed a set of messages sent through Telex, a then-prevalent telegraphy network for business professionals. Despite not having a technical limitation, Hillebrand said, Telex transmissions were usually about the same length as postcards.
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