The quip doesn't say "dilution helps." It says "the solution to pollution is dilution." Dilution solves the problem. And not only that, but it's the solution, n

The quip doesn't say "dilution helps." It says "the solution to pollution is dilution." Dilution solves the problem. And not only that, but it's the solution, not merely a solution. This is just not true, and you seem to agree with that. Yes, CO2 is problematic because of the sheer volume. The sheer volume means that dilution does not solve the problem. Leaded gas and mercury are a problem because of bio-concentration. Which means that dilution does not solve the problem.