The subject of invisibility had cropped in a couple of places on the internet lately, so perhaps I should share the little experience I have with the subject.
(For the record, the reason I kept silent when Pat Zalewski recently stated his opinion was simply the fact that I heard someone else say something really inane on the subject a few years ago. After hearing their opinion, it takes a lot to get me to step forward and say anything about the subject. What Pat said was nothing in comparsion to this another opinion.)
For the record, I have not tried the full-blown Z operation for invisibility (another reason to remain silent). What I have tried is more in line with the "Do not notice me" or "I am someone else's problem" school of invisibilty. My results for the most part might be completely delusional; after all, it is impossible to field-test this under strict scientific conditions.
(Since then, I had a few choice tidbits fall into my lap...but considering I have not the time to test them yet, who really knows if they are tidbits or just more crackpot theories.)
Some of my results may also be pure paranoia. For instance, after doing some of this work, I thought that drivers had a hard time seeing me for quite some time. I never had so many people try to run me over in my entire life in the space of a couple of weeks...and cell phones were not common yet (at the time, they were still pretty big and almost no one had them). But it may just be paranoia and not an actual result.
I learned not to "go invisible" when someone I did not want to talk to had not noticed me yet, but was in line-of-sight of me...for some reason, they could see me instantly if I tried. On the other hand, if someone passed between us, I could "go invisible" and not be troubled at all.
I have noticed that a lot of people do not notice my presence whan I am "deep in my own world."
The strangest story I have to tell involves the grocery store and a week that I had very little time to mediate. I have learned to mediate in less than ideal conditions; much like a cat I can keep a partial eye on the world while deep in my own ponderings. (Ok, it is not mediation if your mind is not a complete blank...I know, I know.) Anyway, I am resting my brain while keeping one eye on the cashier. (No matter how I tell this story, someone is going to say that I am in the wrong...hence why I did not share it on Martin's forum.) Finally, I get to the front of the line. Suddenly the guy behind me is screaming, "Where did you come from? Did you just cut in front of me?" The cashier, bless his soul, looked at the guy and told him that I had been there all along.
Make of that story what you will. For me, I associate it with invisibility because this was around the same time that I had been experimenting with this particular subject. Obviously, if the cashier saw me, then I was not invisible. I am not sure how to explain the guy behind me in the line, but I do have a few theories. If you have a theory to share, please leave it in the comment section.