Covariant vs Canonical Formalism

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Why is a covariant formalism preferred over a canonical formalism in loop quantum gravity, in simple layman terms
 
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Does the usual layman understand what is meant by covariant and canonical?
 
What are the advantages of covariant approach over canonical approach for loop quantum gravity, pedagogical answer please
 
Ultrafastped, Feynman was admired specifically because he could articulate the most simplest responses to all sorts of profound questions in physics, and for that reason he was a great teacher and The Physicists Physcist
 
I would not say that any formalism is preferred. Each formalism has several advantages and disadvantages, so it depends what you want to do exactly.
 

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