If the question means: "Do you believe in extra-terrestrials?", the answer to that question is YES.
Yes I do believe in extra-terrestrials. I am not 100% sure that they have been here, but I do find it more than probable.
There's too much smoke to not be a fire, and even if 99.99999% of the information out there is bogus and the vast number of hillbillies who get anal probed is staggering...
I still believe that there is an international government cover-up about them having been here, or something of that nature.
I am not sure that there has been any actual contact except for wreckages and flybys, though.
A relative of mine and his wife saw an unidentified flying object that could not have been anything else.
Both of them are really serious people. You could almost call them unimaginative. Both are medical doctors and he also holds a PhD. None of them has any drug- or alcohol problems, and no mental illness.
These are no drunken hillbillies who got "experimented on... you know... sexually".
Neither are any of them science-fiction nerds or conspiracy nuts.
The sighting was made during an evening walk, and it flew past them really really close overhead. It's impossible to make him talk about it, sadly.
Then again, there isn't too much to talk about. I trust these people and they have said what they saw and what they felt.