And they make them purposely open to interpretation so that we have to buy lots and lots of tests because we dont know if we should have two lines, cross-hairs, blue lines, pink lines blah blah!
When I took my first pregnancy test I bought digital so that I couldn't confuse myself. Then when it read pregnant and my husband picked it up he said, "Well we havent waited the 3 minutes so maybe its wrong!"
Even with digital he was confused and wanted to call them 1 800 number!