Square Peg Problem (or conjecture) is so famous. See this article
Let $CS:=\{\gamma:S^1\longmapsto\mathbb{R}^2 | \;\;\text {Square Peg Problem is true}\}$ and $C=\{\Upsilon:S^1\longmapsto\mathbb{R}^2 \}$.
Is this true that $CS$ is dense in the set $C$? Is there any results in this direction?