Although chaotic planetary motion had not been observed, experimentalists had encountered turbulence in fluid motion and nonperiodic oscillation in radio circuits without the benefit of a theory to explain what they were seeing.
Ačkoliv chaotický pohyb planet nebyl pozorován, experimentátoři narazili na turbulenci v pohybu kapalin a neperiodické kmity v radiových obvodech, bez podpory teorie, která by vysvětlila jejich pozorování.