Multiple reasons: 1. I don't necessarily know I'm looking for a wikipedia page. For example it turns out there's a Bogart-Bacall syndrome -- https://en.wikiped

Multiple reasons: 1. I don't necessarily know I'm looking for a wikipedia page. For example it turns out there's a Bogart-Bacall syndrome -- https://en.wikipedia.org/wiki/Bogart%E2%80%93Bacall_syndrome https://en.wikipedia.org/wiki/Bogart%E2%80%93Bacall_syndrome -- that would actually be a false positive, but it's definitely not the first time I've found there are interesting wikipedia pages related to the thing I'm searching for. 2. In general, wikipedia's search is worse than google's -- meaning that if I don't know the exact name of the relevant topic, a google search for <topic> "wikipedia" is more likely to hit the right page than a search in wikipedia itself. 3. Opening wikipedia first is more work than typing bogart bacall wikipedia in by browser's search bar.