You are educated, even scientific to a fault and do not subscribe to most rituals unless they are explained. But have you ever looked for a sign? Let me explain.
You have an exam. You look out for the milk lady or the mail van on the way to school
You have an important date today- so you pick out that pink dress which always makes you happy. So what if you do not look your best in it.
You challenge God- God if we do not get out of this traffic jam before I count to 50 , you do not exist. Then you are at 49 and still no sign of the traffic easing out- so you say 49.1 , 49.2, 49.3 ....
You can laugh but I have done all the above. Honestly, haven't you? Is it possible to be so rational all the time?