How many experiments failed because they were never tried?

My personal scientific method is to give time to try and figure out if the experiment will work before I actually give time to work the experiment. I wonder if I have it backwards given that working the experiment is probably the only true way to know if it will work. Or maybe, I really have been running an experiment. An experiment of what happens if one chooses not to run the experiment. Early indicators are showing a 100% success rate of failure. Maybe, I need to try again and re-figure.