RE: Help Me Understand 'Potential Payout' - Why does it decrease?

So what happens to "the quality post" that a user comes across after up-voting multiple articles in a single day, so in other words post "Z" is worthless just because that post was posted after "A, B, and C".. Im not really sure that would be indicative of a post that is not high quality.. I think this method is a bit flawed, but that is just my opinion