Lol was about to answer the same... most shops dont supply the half sizes I KNOW. I am a suffer of elephant feet! Small but wide! The size 3 usually arent wide enough so need to go for a size 4 or even 5 to get the width. The size 5s make my feet slip inside if they get wet (wont go into details) and size 4 always end up rubbing the little toe. I know immediately when i put my foot into a shoe if it will hurt my because either i cant get my foot in or PAIN. You dont get that with food (never had a problem shuveling food in) also i can go years without finding shoes and have to wear slippes or boots (in summer) until i find what fits me. Also our feet adjust to bad feet by creating bunyions, thick skin, or if you are a woman who has worn high heels for years knows the shape of your feet changes as well as the calf muscel shortens... this doesnt happen with food.
There is no shop to go for diets to choose from... to try them on. Like
@ickihun said above we are told what to do and if it doesnt work immediately we are told to wait suffering. There is no proper open discussion in the gp office on the nhs who give you a choice to try and most give WRONG advice (like forcing everyone to wear clown shoes). We cant try a diet and see an immediate effect as our bodies are still trying to heal from years of the wrong diet. So maybe the wrong metaphor to use.