[Music begins: "'White Mischief" composed by Simon Jeffes & Geoffrey Richardson

We have followed our subjects to what appears to be their destination. This group has been in line for almost one hour and they are almost at the entrance of the party. We have already seen that many variables, including gender and biological sex influence an individual's alcohol metabolism, that is the speed at which their body processes alcohol.

But what of tolerance? Tolerance is the term commonly used to refer to the phenomenom of a person needing to drink more in order to experience the same level of intoxication. It is a widely believed myth that a person with greater tolerance actually becomes less impaired when she drinks. In reality, she becomes just as impaired, but is less aware of her impairment.

If two otherwise identical people, with different tolerances, consume the same quantity of alcohol, the person with higher tolerance will feel less drunk, but will respond with the same reduction in motor coordination, judgement, and reaction time as the person with the lower tolerance.

Tolerance then, is the illusion of being sober, when actually an individual is intoxicated.

[Music fades]