What Toddlers Know That You Don't

What do toddlers know that we don't? That's the question I kept pondering as I saw a video of different toddlers whose parents were trying to keep on the grass area barefooted but kept dodging landing.

Well I tried doing same with my Sonshine some time ago and got same reaction. I later wore him one of his sandals and he responded half way. You need to zoom on his feet area to notice his barefoot raised up.

What do you think is responsible for such actions on them? Please feel free to share your thoughts.