Ok, I am done here. Dr. Leary wants everyone to believe he knows what the truth is, and if he is an actually professor with some degrees in neurosciences and not a internet nut with nimble fingers and a decent grasp of the English language, then the millions of people who endure withdrawal symptoms from both nicotine and caffeine are just faking it.
Also, you must not know anything about chemistry, cause a 10% solution (100mg/ml) of nicotine will kill you tenfold. You must be superman to inhale almost 5%.
Oh ya, I am gonna get an unscrupulous doctor to write me a prescription for amphetamitnes so I can "cheat" and become a super genius.
Hopefully the members here realize fact from fiction, experience from theory, and make their own informed decisions.
You might want to ask some of my students who are maintaining a 4.0 with a little pharmaceutical assistance.