Given a point $x$ in a topological space, let $N_x$ denote the set of all neighbourhoods containing $x$. Then $N_x$ is a directed set, where the direction is given by reverse inclusion, so that $S ≥ T$ if and only if $S$ is contained in $T$. For $S$ in $N_x$, let $x_S$ be a point in $S$. Then $(x_S)$ is a net. As $S$ increases with respect to $≥$, the points $x_S$ in the net are constrained to lie in decreasing neighbourhoods of $x$, so intuitively speaking, we are led to the idea that $x_S$ must tend towards $x$ in some sense.
I wonder if its only for fun :D