Continuing my voyage of obscure-error-discovery around Sitecore 9, this week SIF has been putting a lot of red into console windows for me. I'm not sure how many people will have this scenario, but if you have multiple people who all need to install their own Sitecore 9 instance onto one machine, this may be of interest:
I'm working on my first proper Sitecore 9 project at the moment, and got bitten by an annoying bit of confusion while doing some configuration work. If you're tweaking how xConnect works take note, and hopefully you can avoid making the same mistake I did...