Category:Source data errors

We can use this category to mark pages on which the sources gave us data which was apparently in error. This category frees us up and gives us some information:

• Enables us to count and classify improvements we made on the source data
• Enables readers to audit/recheck things we think we fixed
• Enables us to identify suggested corrections to send to our sources, notably espacenet, also Lilienthal museum
• Enables us to fix apparently-wrong CPC categories without much worry or guilt