  In this note we give a short and self-contained proof that, for any $\delta >
0$, $\sum_{x \leq n \leq x+x^\delta} \lambda(n) = o(x^\delta)$ for almost all
$x \in [X, 2X]$. We also sketch a proof of a generalization of such a result to
general real-valued multiplicative functions. Both results are special cases of
results in our more involved and lengthy recent pre-print.
