Question

1. You will have met Prof. Smith.
2. You must have met Prof. Smith.
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In a grammar book, it is said that #1 means a guessing in the past, which is weaker than #2. Is that right? Can we use #2?
2 is <b>FAR</b> better than 1, for sure!! Please use 2 and not 1!!
Thank you for your help.
Writeacher
You're welcome!

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