scratch the surface

In my short lifespan, I probably won’t do more than scratch the surface of what an orchestra can do, but I’m working on it.

Scratch the surface of American politics or culture, and medievalism seems to always be lurking just beneath.

Scratch the surface even a millimeter, and it's evident Kennedy has a hostile, even eliminationist attitude towards anyone he has decided doesn't meet his esoteric standard of physical fitness.

These barely scratch the surface of what “Twin Peaks” came to mean to TV and popular culture more broadly, and if you need a reminder or have yet to fall under the spell of Kyle MacLachlan’s FBI Special Agent Dale Cooper, now is the time.

There are also enameled cast-iron pans that you don’t need to season, however, while you can put them in the oven and use them at high heat, the enameled coating does mean you can’t use metal utensils and must be careful not to scratch the surface.