[simiones]

I think the GP is referring to a different part of the Japanese numbering system: the two different numerals used with different counting words for 1-10; e.g. the fact that you say "muttsu no koto" [6つのこと] for "six things" but "rokko no retasu" [6個のレタス] for "six heads of lettuce".

This is what they are comparing to the difference between "first" and "one" in English, which are obviously two different origin words for the number 1 (unlike sixth and six, where sixth is clearly just derived from six).

[mcmoor]

Ah so it's about onyomi and kunyomi (Chinese and Japanese reading)? It screws me up sometimes too but there's only two choices. What I heard lots of people cries about sometimes is the counter words, that's indeed so many, so I'm referring to that instead.

[ralferoo]

Yeah, measure words aren't really that strange a concept in English, it's just that we don't normally consider them. But we have e.g. "a pinch of salt", "a lashing of ginger beer" [1], "a lump of coal", "a slice of cake", "a piece of music", "a spit of rain", "a drop of water", "a bucket of water", "a sheet of paper", "a ream of paper", "a glass of beer", "a bottle of beer", "a sip/mouthful of beer", etc. The last few sets of words were to show an even more useful correspondence with Chinese - as they would be 一杯酒，一瓶酒， 一口酒 respectively, and suddenly they seem a lot more reasonable.

We also have a LOT of these for plurals and take great pride in knowing all the stupid ones - "a gaggle of geese", "a murder of crows", "a herd of cows", "a fleet of ships". These are all really just the same as the measure words in Chinese with many specialisations for large groups of specific things.

We also have plenty of measure words in English when we take something from the realm of uncountable to countable, as I showed in the examples above, and in many ways Chinese tends to have less weird single-use ones like "gaggle of geese", just a larger variety of the common ones. So there's a special word for "long thin things", "vertical long thing things", "flat things on a (mathematical) plane", "a lump", "a slice", "a vehicle", "a machine" as well as the fallback 个/個 when none of the more specific ones are appropriate. I think it's only because we generally don't use any measure word for small groups of countable nouns in English that we think it's somehow strange that other languages do.

There's also not so many counter words to be a problem. Sure, the absolute number is high (some say very precise numbers like 214, 232, etc, some people low ball it at 100, some say over 900 words if you count all the old obscure words), but in practice, about a dozen of them will cover almost all the cases you think are hard for English speakers. So, 个，条，只，支，本，件，张, 家，座，部，辆，头 are probably the most common ones that don't usually have an English translation, almost every other measure word would also require a measure word in English, e.g. 条=strip, 张=sheet, 些=few, 双=pair, 样=kind, 种=type, 头=head, 片=slice, 分/份=piece, 点=bit, 块=lump, etc.

As with most things about learning a new language, it's also important to embrace the differences - they give you a new insight into how other people think about things, and seeing when someone else's internal model for something differs to yours can help you better understand your own model as well as the new one you're learning.

[1] You'll understand this if you ever read The Famous Five!