> On 24/05/2011 21:40, andrel wrote:
>
>> The whole point of learning multiplication tables by heart is that you
>> need them to do all other computations in base 10.
>
> Most people would consider that you need a calculator to do any
> computations in base 10, beyond really trivial ones.

Trivial, like multiplying 2 random phone numbers in your head? :P
I've done that several times, just for the /fun/...
Take some random 10 digits number, then another random 7 digit number. 
OK. Now, without paper, what is the product? Hint, it's 17 digit long, 
possibly 18. Your pocket calculator can't give you the exact result.

>
>> If you don't know them by heart a large part of our culture is
>> inaccessible to you.
>
> Such as?
>
>>>> If not, I weep for humanity.
>>
>> I'll join you.
>
> I fear for the future of society, but for many reasons in addition to
> this...

:P Alain

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