Negative take on preprints. IMHO doesn't mention true criticism: feedback will disproportionately be, & already is, given to "better" labs.https://twitter.com/SmallPondSci/status/889440829848395776 …
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Fair enough. Not sure letter to editor and comment on preprint serve same function, as I assume you know.
I guess a comment on preprint server sits somewhere between a tweet and letter to editor?
Yeah, I guess so. Nice spectrum! 
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