Is there any logic to the expression 'in and of itself', or is it just an idiom?
Is there any logic to the expression 'in and of itself', or is it just an idiom?

It's a slightly more emphatic form of "in itself" (the extra few syllables give you time to gather your thoughts). And "in itself" is a more natural and direct way to say "inherently."
"It is not, in and of itself, a solution to all our problems, but it could be used for..."
You asked for "logic" is that logic?

Best wishes Donna Richoux
Is there any logic to the expression 'in and of itself', or is it just an idiom?

If "In itself ..." is meaningful AND "of itself..." is meaningful, then a meaningful phrase can be constructed in the form "In and of itself." Which seems logical.

John Dean
Oxford
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If "In itself ..." is meaningful AND "of itself..." is meaningful, then a meaningful phrase can be constructed in the form "In and of itself."

But I don't understand what 'of itself' means.
Is there any logic to the expression 'in and of itself', or is it just an idiom?

It's a slightly more emphatic form of "in itself" (the extra few syllables give you time to gather your thoughts). ... a solution to all our problems, but it could be used for..." You asked for "logic" is that logic?

It would work only if you could separate "in" and "of" and use each alone. Does
"It is not, of itself, a solution to all
our problems, but it could be used for..."
make complete sense? I don't think so. I think "in and by itself" would be much more logical, because the two prepositions make sense when each is used alone.
I think "in and of itself" is a true idiom, with "and of" acting as a meaningless intensifier of "in itself" and having no viability of its own.
If "In itself ..." is meaningful AND "of itself..." is meaningful, then a meaningful phrase can be constructed in the form "In and of itself."

But I don't understand what 'of itself' means.

Then "in and of itself" is meaningless to you.

John Dean
Oxford
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