In cases where it's unlikely that anything in the photo should be gray, your best bet is to color correct the highlights and shadows and leave the midtones alone. If there is an area that's supposed to be neutral gray, though, this technique will find it.
An average person spends 14-15 years of their life on the toilet.  (true)   another interesting fact - an average person spends 3 days of their  life sitting at a red liâ¦ght.
A study by Nielsen shows we spend an average of 5.3% of our time emailing, and 13.4% of our time texting. Based on our total mobile time of 4+ hours a day, Nielsen shows we spend about 13 minutes and 35 minutes per day on emailing and texting.