[im3w1l]

It's very mysterious how the chemical properties of the table salt shaker differs from the seasoning.

[feet]

It's rather the amount and perception of amount added. Usually in recipes while cooking, the amount is more controlled and distributed throughout the dish. Adding further salt adds more uncontrolled variability to the sodium intake in ones' diet

[iorek_dev]

I think there is more than the amount. Salt is a taste enhancer when you cook with it, added to the table it just add a salty taste to your plate.