I've been suffering from S.H.I.I. Does anybody have a remedy other that jumping up and down and screaming?

Jordan Spieth almost did that 2 days ago; I had actually followed him on the course until the 9th hole before switching to the final group with Scottie Scheffler, so missed this which happened on the back nine:

So he obviously didn’t see these fans at all, given that he aimed right at them, so you have company, on the course at least.

Edit: I was a bit late and missed him playing the first hole, which is where this happened.

Secretary: The Invisible Man is at my desk and wants to talk with you.
Boss: The Invisible Man? Tell him I can’t see him.

The invisible man on Night Court.

This is why I always wear a high-visibility reflector vest when biking.

Of course it doesn’t always work.

The worst, though, is when I’m going down the street, someone on a side street starts pulling through the intersection, and then they see me and go “Oh, a bicyclist! I’d better stop to let them past!”, and slam on the brakes right as they’re getting far enough into the intersection to completely block me. And then they get puzzled when I in turn slam on my brakes and stop and wait for them, like “Why isn’t the bicyclist I stopped to let past going past?”, and try to wave me past. Usually, of course, this happens at a point where, if they hadn’t seen me at all and just continued through the intersection, they’d have been long past before I got there.

Try using a wheelchair in a mall or any other busy public place.

They’re the ones most likely to run me down in the grocery store. Just as at the golf course, my invisibility extends to include my shopping cart.

Hey, apparently (hah!) there’s meditation that you can practice to become invisible!

This could be useful.

Although it does seem like a lot of work, when all I really have to do to become invisible is stand next to a pretty girl at the bar and try ordering a beer…

I become invisible by practicing de-enlightenment.

I turn off the lights.

I’ve been involuntarily invisible for years.

Way back in grad school somebody came into the office that three of us grad students were sharing and looked around. My officemates weren’t there, and evidently he didn’t see me. Looking around for a piece of paper, he started writing a note to leave on the desk. I cleared my throat, and shocked the hell out of him.

It wasn’t an exceptionally cluttered office. In fact, it was pretty empty. I was wearing a black shirt and sitting in front of a blackboard, but come on. It takes more than that to be invisible. Whatever it taks, I’ve got. There are plenty of other cases where people should have seen me but didn’t.

I find I tend to be invisible when I’m not talking.

This is assisted by being small in real life and walking very quietly.

This may account at least in part for my loud, larger-than-life, on-line personality.

At least some sort of fancy metamaterial with an effectively-sub-unity index of refraction, right?

Aside: There’s a kids’ game, popular at camps and such, called Wax Museum, where there’s one “guard”, and everyone moves when the “guard” isn’t looking, but if they turn around and see you moving, you’re out. My technique for that game is to just never stop moving, just really slowly.

I’ve never trusted that – it only works in certain restricted circumstances. (and I say that as an Optical Engineer) SHII appears to be more psychologically based. At least it is in my experience.

Do you become invisible by crossing your arms & snapping your fingers? Is your name Burt?

If you have to make any motions to become invisible – especially eye-catching ones like that, you’re clearly not doing it right.

I dunno. I see them all the time in the supermarket. Hell, I saw one a week ago, and I’m still thinkin’ about her!

A cane works too. Board a busy bus or train with a cane and you’re practically invisible.