Board Thread:Plants vs. Zombies 2/@comment-25546049-20150620230906/@comment-7234182-20150624171448

Nothing "paradoxal" (it's spelled "paradoxical," folks!) about planes there. Zomboss is traveling through time. He can use technology from the future, even if he's back in the past. This also looks like 1920s or 1930s, which means there were already planes there.