[ksenzee]

I think they meant the encoding is more efficient, so you can encode more information with fewer characters.

[Tor3]

If you think of Japanese writing as a whole (kanji, hiragana, katakana where needed) then indeed you can encode more information in less space. Which is easy to see if you compare the Japanese sections with the English sections of dual-language user manuals (those who actually include exactly the same amount of information of course). The Japanese sections are about 30% shorter than their English (or any other language written with Latin letters). One manual I looked at was 60 pages in Japanese, 90 in English, including illustrations (same on both).

[ickoonite]

Absolutely. Japanese Twitter is another great example.

I’ve often liked to describe kanji as a form of compression: the problem is the encoding and decoding are done in your head rather than by a computer.

[smsm42]

But since you need more bits to encode a single character, at least in most common encodings without inventing a custom one, it's not really much more efficient.