> The threshhold for being in the top 1% of income is that 99% or more of people make less than you.

Clearly I mean the threshold for being upper class a term mentioned in your actual comment... unlike "top 1%" which was not.

Not all members of the upper class are in the top 1%.

But all members of the top 1% are in the upper class.

So we're agreed that "top 1%" and "upper class" are not interchangable terms.