You can. I go on a 2 week Mahasi vipassana silent meditation retreat each year and each time the release notes make it worth the time and effort. Also like running defrag on a disk that has been defragged regurlarly, it runs smoother each time, making the whole experience much more pleasurable.

Release notes last retreat:

• Fixed approval seeking issue due to lack of approval by clueless dad during teenage years
• Reduced day dreaming by 10% by recognizing mechanisms that lead to day dreaming
• Optimized routines for dealing with tough situations
• Increased mindfulness by eliminating several mechanisms that lead to mindlesness
• Discovered access to high concentration states that likely will lead to more discoveries
• Fixed loneliness issue due to missed update
• Fixed part of a (self and others) judgement issue. More work on this issue needed.

The above is a pretty accurate representation of the results I got.