s-may-themselves-change-unpredictably"><i class="fa fa-check"></i><b>5.3</b> Covariates may themselves change unpredictably</a></li>
<li class="chapter" data-level="5.4" data-path="timedep.html"><a href="timedep.html#time-itself-as-a-covariate"><i class="fa fa-check"></i><b>5.4</b> Time itself as a covariate</a></li>
<li class="chapter" data-level="5.5" data-path="timedep.html"><a href="timedep.html#partially-known-states"><i class="fa fa-check"></i><b>5.5</b> Partially-known states</a></li>
<li class="chap