Hinge on

It should be "is based on".

"hinges on" emphasises a dependency such that if the fact were different then the answer would be different. "based on" is more general.

Hi

The second one is straightforward: here is the answer and here is the fact that it is based on

The first one is metaphorical - like a door opening on its hinges. If you grasp this fact then the answer to question will become clear to you, like a door swinging open

In that second case, it is sometimes called the 'Aha! moment' or the 'Eureka effect'. It is the one thi

dave_anonHiThe second one is straightforward: here is the answer and here is the fact that it is based onThe first one is metaphorical - like a door opening on its hinges. If you grasp this fact then the answer to question will become clear to you, like a door swinging openIn that second case, it is sometimes called the 'Aha! moment' or the 'Eureka effect'. It is the one

dave_anonThe first one is metaphorical - like a door opening on its hinges. If you grasp this fact then the answer to question will become clear to you, like a door swinging openIn that second case, it is sometimes called the 'Aha! moment' or the 'Eureka effect'. It is the one thing that you needed to know in order to understand the situation

That is not right

Archimedes' principle hinges on the fact that the upward force on a body in fluid is equal to the weight of the fluid displaced

It is a common belief that, when Archimedes realised this pivotal fact, he shouted 'Eureka!'

Don't give me grief

Dave

dave_anonDon't give me grief

I am sparing the ESL learners here the grief of misinformation. Nothing personal, but your etymology is fictional.

Hi Soheil

'The one thing you need to know' is a common idiom - it means the single fact that you need in order to understand a situation. To be honest, it may be a cliché - a worn-out phrase

With regard to the pawns and the pieces: almost always, the pawns will never be worth as much as the pieces. There may be times when a piece is sacrificed in order to break through a **** d

Hi enoon

Well, it's a forum, so others must decide for themselves whether the Greek work 'eureka' is used in that way in the English language

http://en.wikipedia.org/wiki/Eureka_(word)

Dave

dave_anonWell, it's a forum, so others must decide for themselves whether the Greek work 'eureka' is used in that way in the English language

What way?

In the way described in the link that I posted

'Eureka' means 'I have found it' - it means that you have discovered the key fact that your theory hinges upon

Dave