Yes, that's right.So it's more like "I think ..."?
In other words "I think...(but I'm not sure)"Sort of. But maybe even 'I think' is too strong without any additional modification or restriction.
To me 'as best as I can tell' means that I don't really know for a fact but on the evidence I have then I prefer this explanation to that explanation.
Not sure if I'm conveying the right subtlety here but I hope you get the idea.
Regards
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