What’s that? , u-sub-alpha x-sub-infinity? How do I input that? Are you now used to proofread scans of math papers? Not that that wouldn’t be a noble endeavor, but… sheesh, I’ll click recycle. I don’t need this in my free time.
(Coming soon — register for your academic specialty for your own brand of Science-Captcha! All manner of mangled figures only your kind knows the inputs for!)