This article tackles a few of the claims made by Ken Ham in his debate with Bill Nye. As is the norm with creationist arguments the claims are fact-challenged, full of shoddy (or dare I say deceitful) logic, and have been debunked for decades. I found this excerpt particularly amusing for its analogy.
The “amount of helium,” “amount of sediment in the sea” and other “amount” arguments have also been debunked because the young earth creationists only take into account the factors that add certain substances and then ignore the processes that remove these substances and the point of which equilibrium is met.
Through measuring the amount of trash in your house, we can conclude that your home is no more than a week old. We can reach that conclusion by factoring the trash that comes into your residence every day and by completely ignoring the weekly trash pickup or any other consideration. Using half of equations in conjunction with “we don’t know something therefore god did it” is how young earth creationist arguments work.