A man in a lab coat enters the room and walks up to the doctor. He looks at you and then whispers something to the doctor in his ear and the doctor then whispers something back making sure you don't here what he is saying. This goes on for a few minutes and then the man eventually leaves the room.
The doctor then smiles and says
"So where were we?.....or yes! you were asking about the formulas"
He goes on in saying
"The vials you see here are the latest in body regeneration technology, the liquids inside these vials can do amazing things. For example just yesturday it repaired damaged skin tissue from a burn victim and also restored another person's damaged lung and brought it back to a working health state!"
He then goes on in says
"From this I can't tell you anymore since it's a secert project, so what do you say? All we are going to do is test some of the formulas on you to make sure that we accounted for all the factors, and ofcourse we are going to pay you a fair amount for doing so"
Wow! You think to yourself- this is almost to good to be true. But then you stop yourself and say
"There has to be something your not telling me, your not going to try cutting my fingers off and seeing if the vials will regrow them? if so I'll have to say no thanks!"
"Ho ho" says the doctor laughingly,
"No, we aren't going to do anything that extreme - You don't have to worry the formulas have had countless years of testing, we just need to do a few more before it's safe for the public"
After hearing this your mind goes to ease. They are paying pretty well and you could really use the money. So you say
"Sure doc, let's get started!"
The doctor smiles and proclaims "great!". He then starts thinking about which vial needs testing.....