Update our-mission.md

Author: palewire

docs/our-mission.md

@@ -1,8 +1,8 @@
 # What we'll do
 
-Journalists frequently encounter the mountains of messy and unstructured data generated by our periphrastic society. This vast and verbose corpus boasts everything from long-hand entries in police reports to the legalese of legislative bills.
+Journalists frequently encounter the mountains of messy data generated by our periphrastic society. This vast and verbose corpus boasts everything from long-hand entries in police reports to the legalese of legislative bills.
 
-Understanding and analyzing this data is critical to the job but can be time-consuming and error-prone. Computers can help by automating sorting through large blocks of text, extracting key details, and flagging unusual patterns.
+Understanding and analyzing this data is critical to the job but can be time-consuming and inefficient. Computers can help by automating sorting through large blocks of text, extracting key details, and flagging unusual patterns.
 
 A common goal in this work is to classify text into categories. For example, you might want to sort a collection of emails as “spam” and “not spam” or identify corporate filings that suggest a company is about to go bankrupt.