English as a Second Language/20/20


Whould you please tell me what does "20/20" mean here?

The reception of imagery is, to a large degree, culturally determined, and hindsight is 20/20.


Hi Azad!

20/20 is a measurement of human vision.  Generally human vision is measured using a number compared to 20.  10/20 means the person has less than normal vision, 30/20 means better than aveage.  20/20 is considered perfect vision.

Hindsight, on the other hand, is the ability to look BACK (behind) into your past and see what happened.  Therefore, the expression "hindsight is 20/20" means that when we look BACK at our past (instead of look now at the present), we can see (or realize or understand) what happened PERFECTLY (but we can't when we are looking at it right now).

Hope that makes sense!

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Brian Connelly


I can answer pretty much any question a student might have about English; about grammar, vocabulary, meanings of words, phrases, expressions or idioms, pronunciation, etc. I can answer questions about how to learn or study English better, how to improve certain aspects of communication (listening, writing, speaking, etc), about why we have certain rules.


I've been teaching English in Japan, mainly as a private (one-to-one) teacher, but also at companies such as Universal Studios or international airports. I have taught professional interpreters and translators and I have also taught students who dropped out of high school and never learned any English. Several years ago I acquired the CELTA and I have been running my own classroom for the past year.

None in particular, but I work with a number of companies who regularly introduce me to new students and occasionally to other companies that are looking for English teachers.


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I currently have approximately 40 individual students with whom I work one on one. I have also worked with local manufacturing companies, colleges, local retailers, as well as Sharp, Universal Studios, Itami International Airport, Kobe International Airport

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