Searching for a word: what is the word for the imaginary, invisible object that one might trip over. Help!?
959443
A pitfal? Or maybe it's pitfall.
63692
Deja Vu.\n\n(There's also "Deja Moo", the feeling that you've gone through this bull before...)
286499
One word my friend, one word:\n\nZOMBIFACATION!!!!!
552068
it's a tie\n\nwent to a Halloween party as the invisible man\n\ndiscovered perpetual motion without trying to, or knowing what it was, or that it was supposed to be imposible
270820
Desenselessness\n\nAnother one : Defenselessness
118725
Yes, I saw an Un - Flying Object !!!
985801
Nothingness, void, empty, space, no existance!\nDarkness!! Death!!!!!!\nHell!!!!!!!!!!!!!!!!!
36164
Existentialist angst--man is adrift in a universe he cannot possibly account for, and yet is accountable in.  Accountable to what?  To forces beyond his control; beyond accountability.  And if that is not enough, accountable to his own conscience: "Between our own thoughts, we are accused or excused."
1102058
It is, in fact, Supercalifragilisticexpialidoc ious (space because it cuts me off otherwise).  That's what I thought, but I figured I'd better check...just in case.\n\nInterestingly, the longest common phrase is: ship-towed long-range acoustic detection system.\n\nI just discovered the other answer, and...wow.  I took this way, way too seriously.
708483
Nothingness.\n\nOr maybe it's encroaching on another Universe?  Hmmmm......
923889
And by accident. No purpose, no meaning, no plan, no design. Funny isn't to think that all that is, is nothing at all. Just one big mess of an accident that.\n\nKind of like looking at a big building and wondering how did that get there. Building, builder, Creation, Creator. Man that is so hard to understand. I don't need to know who the builder was but if I see a building then I know that there was also a builder. I see creation I also know that there was a creator.
42894
The point of the riddle is that perception controls reality, because nothing is assured until we perceive it. It should be modified to say, "If a tree falls in the forest and there are no people or recording devices present, can you have any clue as to the sound it made?" It is an answerless riddle by definition.
1118329
Something that prevents you from doing something.
104076
An optical illusion is when your mind perceives and interprets visuals differently. Basically, people call it a flaw of the visual system but basically it means that you are just experiencing and sensing things that are clear to you in a different way. It happens to everyone, and usually happens when you are not looking closely... \n\nWanna try a really cool optical illusion? Try this one:\nhttp://www.brainteasercentral.com/riddle.php?riddleid=680&PHPSESSID=c0b73d7cde4995835be4fad0b5d3152b\n\nFollow the instructions on the page and see what happens. I bet you'll be shocked. =p\n\nMore info on optical illusion here: http://www.michaelbach.de/ot/
528616
imagination...  without imagination, we wouldnt have any knowledge.  without wondering how things work, or why things behave in a certain way with our imagination, there would never have been any persuit of knowledge.
1005244
supercalifragilisticexpiali-\ndocious\n\nall together, yahoo wouldn't print the whole thing for some reason.
991201
One of two things will happen:\n\n1) The so-called unmovable object will be moved.\n2) The so-called unstoppable oject will be stopped.\n\nThis existance of an unstoppable object precludes the existance of an unmovable one, and vice versa. Of course, it's likely that neither one exists anyway so the question is pointless.