If lie detectors really work,?

Question

Why dont they use them in court?
It would save a lot of time and effort!

Answer 1

They aren't completely reliable and can be fooled or tricked by smart people !

Answer 2

Lie detectors are not sufficient and do not hold up in court so they cannot be used against you in a court-setting. They have many flaws.

They can be tricked as some people pointed out by i guess smart people that have read about how to trick a lie detector machine, not because you are smart you are going to be able to trick it takes studying of how they work and what they monitor and there flaws. Then you can get an understanding of how to beat it.

Answer 3

i agree i hate lies wish we could buy lie detectors from tesco,and have them in schools etc it would save a lot of time and stress. but on a serious note i really do think it would help the police,and courts to sort out a lot of people,they may not even have to use them most of the time coz people would just tell the truth if they thought they were going to use the detector on them

Answer 4

Because lie detectors are only 80% correct.It has shown in the past, that where lie detctors are used people have managed to lie successsfully. Our courts will not accept them as evidence because our law states that a person must be convicted beyond any doubt. Myself, I think this is the best law.

Answer 5

All I can think of is the swearing on the bible bit. If they used lie detectors the religion bit would be void and I don't think certain groups would be too happy with that. It would be a massive overhaul of the very foundations of our law - basing it entirely on science and not religion.

Having said that I think it has been used in court as part of evidence. I think it involves signing consent forms - maybe they can't be bothered with the paper work!

Answer 6

that would work in theory if they were 100% effective, but they aren't. and they only detect discrepancies in what the person has answered, not whether they actually know or not, plus the questions have to be accurate or they generate construed answers.

as for using them in courts, i think people would be rather upset that they have a machine Judge their life as apposed to a group of people, - after all if you were on death row wouldn't you prefer people who could disprove the machine, or a machine which could go wrong and get you the death penalty even if you are innocent? x x

Answer 7

Ha ha, good idea. However, they claim to not be 100% accurate but when people lie in court surely they're being 100% inaccurate? You get a star from me anyway. Have a nice day.

Answer 8

compulsive liars are people who actually dont believe their lying, and these kinds of people would easily be able to beat a lie detector test, shame though as it would make things a lot easier than guilty people getting off due to their corrupt lawyers.

Answer 9

Yes, but even things that work are not used. Look at the recent case with Anna Nicole Smith, DNA is 99.9% accurate, so why don't they just test all the men on the planet and find out who the baby's father is.

Answer 10

There's a margin of error, as well as people who really believe things. They can fool lie detectors if they really believe what they are saying.

They can also be so nervous, that they can be "lying" about everything, and really be lying about nothing.

Answer 11

True..But than lawyers&judges might get unemployed than it would be hard for them to get a job..Than their will be a total alteration in law of the country..And many such chain of events will happen..