Checking robustness to noise I think. These algorithms are meant for stochastic, not entirely predictable environments (so your action might not always work an

Checking robustness to noise I think. These algorithms are meant for stochastic, not entirely predictable environments (so your action might not always work and you should be able to carry on task even after some action failure (eg. in case of walking - you could slip, wind blows harder or something hits you etc.))