Consider the following statements about a given set $X$ in in $\mathsf{ZF}$: (1) There is $x_0\in X$ such that there is a bijection $\varphi: X\to X\setminus\{x_0\}$. (2) There is an injective map $\iota:\mathbb{N}\to X$. It is easy to see that (2) implies (1) in $\mathsf{ZF}$, but are they equivalent?