  Focusing on semiclassical systems, we show that the parametrically long
exponential growth of out-of-time order correlators (OTOCs), also known as
scrambling, does not necessitate chaos. Indeed, scrambling can simply result
from the presence of unstable fixed points in phase space, even in a
classically integrable model. We derive a lower bound on the OTOC Lyapunov
exponent which depends only on local properties of such fixed points. We
present several models for which this bound is tight, i.e. for which scrambling
is dominated by the local dynamics around the fixed points. We propose that the
notion of scrambling be distinguished from that of chaos.
