Basically, any time you have only partial information about a situation, which is pretty much all the time. (sciencemag.org)
«The report is based on partial information, inaccurate opinion and some misunderstanding of facts,» a spokesman said. (politics.co.uk)
Having lots of partial information at your finger tips doesn't help, whether you're investing or trying to self - diagnose on a medical website. (moneysense.ca)