Systems that use machine learning to do document review actually already exist. E.g. <a href="https:&#x2F;&#x2F;kirasystems.com" rel="nofollow">https:&#x2F;&#x2F;kirasystems.com</a>. They currently still need a lawyer in the loop to review and adjust the results, but eventually will be accurate enough to produce summaries that are more accurate than a human without any intervention.<p>Traditional law firms are starting to invest in software like this. While it can be used to reduce hours, it can also be used to sell more by increasing the value of the hours spent. For example, instead of doing a review of a subset of a clients documents, they can offer to review all the documents for the same, or even slightly higher price.