I'm not sure this is the best stack site for this question. But it does have to do with Google search functionality so I think it is justifiable to ask here. If I'm wrong, please let me know.
My boss likes to check site:yoursite.com almost daily and see the number of results.
He thinks it is good when there is a higher number.
The weirdest thing is that the number fluctuates wildly. One day it will be 37,000, and the next day it will be 300,000.
I've even tried it from two different locations at the same exact time and gotten the same discrepancy.
Why would the same site: search return different numbers of results from two different locations or two different times when the site has changed very little if at all?
Is the site: result count really a good indicator of how well-indexed your site is by Google?
When it's high, does it indicate that you're doing a good job of SEO?
I know that that last question is rather silly, but any kind of answer connecting site: to SEO would help. I don't think the number matters much but I need evidence to convince my boss he's barking up the wrong tree.