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ThisIsMyAltFace

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I believe she said it wasn't a replication because she had changed the formula. She seemed to have problems with the efficiency of the original formula, which is why I believe she doesn't believe it's replication what she produced may in the end not be LK-99.

Yes, it isn't replication, and the only proof that her modified substance does anything interesting is a photo of a single grain suspended inside a small tube. She hasn't written anything clarifying the process from her vague twitter thread, she hasn't posted a video showing the sample's behavior (which would be better than nothing), she hasn't shown any measurements, and when people ask for these things, she gives unconvincing excuses.

And yet every thread is full of people saying she was the first to replicate. The USSR tweets are a little eyerolling but not the main issue

When Webb's mission began, the affected C3 segment had a wavefront error of 56 nanometers rms (root mean square), which was in line with the 17 other mirror portions.

Post-impact, however, the error increased to 258 nm rms, but realignments to the mirror segments as a whole reduced the overall impact to just 59 nm rms. For the time being, the team wrote Webb's alignment is well within performance limits, as the realigned mirror segments are "about 5-10 nm rms above the previous best wavefront error rms values."