Aptitude best to ignore a dependency

[Kevin Chadwick <ma1l1ists@yahoo.co.uk>]

http://superuser.com/questions/95509/tell-aptitude-to-ignore-broken-package

Does this work and is aptitude the best way to update whilst ignoring
incorrect or even debatable dependencies or can apt-get do so too.

Is equiv a fast and easy solution?

Currently I am getting fix broken on steam-launcher which wants
jockey-common -> polkit


Also shouldn't security updates for existing packages update in any
case. What if something broke and the user didn't notice (background
task)?