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advancement in roller skates has changed dramatically. when roller skates were invented, they were something like this: a wooden plate resting on two sticks attached with wheels. as scince and technology changed, roller skates also strted to develope. around 1980's the new model of roller skates came out. this time it was much stable and quicker than the previous ones. those skates used ball bearings fitted in the wheels. the top was made of metal. these days they are more advanced. they still use ball bearings, metal top but added with a fluid, which allows to gain a quick and fast speed.
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∙ 12y ago
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restaurants have changed greatly because waiters and hostesses do not use roller skates to bring you your meal. it would be more entertaining that way. sonic does it but is not a true restaurant.
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