This means knowing when to "dig" for more information, and how much information can be gained from the research subjects before they tire or become bored with the experience
"In 80% of Taser uses in the UK, the mere presence of the device is enough to resolve the violent or potentially violent situation without any force being used." Follow @BBCNewsbeat, external on Twitter, BBCNewsbeat, external on Instagram, Radio1Newsbeat, external on YouTube and you can now follow BBC_Newsbeat on Snapchat
Q.ChenX
In the 1950s, the Hollingsworth & Vose Company produced asbestos cigarette filters for Lorillard Tobacco Company's "Kent Micronite" brand cigarettes
One major problem is trying to convince addicted teenagers to actually commit to quitting nicotine in the first place
Thats right the same cyanide Hollywood spies keep in fake teeth to instantly poison themselves