How to report one

Send the page, the figure you think is wrong, and — if you have one — the source that says otherwise. A manufacturer spec sheet or a primary data source settles almost every case. See contact.

What we do about it

• A wrong figure is corrected in the data file it came from, which corrects every page that uses it at once. The page records the date it changed.
• A disputed figure — where our source and yours disagree — is removed rather than adjusted, and stays out until a primary document settles it. We would rather show a blank than pick the more likely of two numbers.
• A discontinued or revised product is marked as such and excluded from recommendations. Being on sale and being the product we hold a spec sheet for are two different things.

What we do not do

We do not silently edit a figure and leave the page looking untouched, and we do not delete a page to make a mistake disappear.