The Danger of Dual ISBN

Back when I was taking cataloging a decade or so ago, I had a Professor who had what I have found to be a pretty unique perspective: She detested OCLC. She considered WorldCat to be filled with errors and problems. While she may have been a little harsh, she did have a point. For example, in front of me right now, I have Lincoln and Chief Justice Taney: Slavery, Secession, and the President’s War Powers by James F. Simon. If you search for the isbn, 074325032x, on the book, you will find that it also links to Whistling past Dixie: how Democrats can win without the South by Thomas F Schaller. According to Amazon, the correct isbn is 0743290151. In the end, it turns out the Schaller book shows both versions of the ISBN and that is why it is searchable either way. My question is, is a mistake presumably made in a CIP record worth keeping?
http://www.libraryplanet.com/2006/11/07/the-danger-of-dual-isbn/
www.libraryplanet.com
crawl=CC-MAIN-2013-20
9855
application/http; msgtype=response
sha1:3MAFTGV5UIVWLZPFUJXM3I2FZEK53WNM
<urn:uuid:91f7f94b-1bfd-4589-bd73-a38614bbcff9>
2013-06-19T20:49:13Z
67.228.49.114
sha1:4GKH3UOU72CQ2E4WXBVTBK7I72BG6MXM
<urn:uuid:4d2fe66a-ed0c-4b23-9682-8595ea8ea9d1>
http://www.libraryplanet.com/2006/11/07/the-danger-of-dual-isbn/
response
<urn:uuid:6d2d1a5a-f7d9-44ae-a63a-250e2bee2376>
robots: classic
hostname: ip-10-60-113-184.ec2.internal
software: Nutch 1.6 (CC)/CC WarcExport 1.0
isPartOf: CC-MAIN-2013-20
operator: CommonCrawl Admin
description: Wide crawl of the web with URLs provided by Blekko for Spring 2013
publisher: CommonCrawl
format: WARC File Format 1.0
conformsTo: http://bibnum.bnf.fr/WARC/WARC_ISO_28500_version1_latestdraft.pdf