>> when you wonder exactly how deep you need to dig to reach the
>> real answers to questions like What is energy ? What is information ?
> 
> Not very deep

Depends on where you start from and how much detail you want.
Energy is what the power company supplies. Oh, OK, where do they
get it from ? Steam. Where does the water get it from ? The Universe.
Hmmm, getting a bit technical but thanks anyway

> All 'What is'  questions share this property, but often answers can
> be given that seem to be OK. Emphasis on 'seem'

The increasing depth of the answer will satify cliques along the way
as it gives them tools to use

What is quantum tunneling ?
How does it work ?
Can we make better electronic products with it ?
Will those help us measure gravity waves ?
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