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## Main Question or Discussion Point

Hello everybody,

Based of some information that I recently learnt(which I don't know if they are right or wrong), I start asking myself this question about the euclidean geometry.

Ok, this geometry is basically founded on straight lines, and what I have learnt is there is no such a thing as a straight line in our planet.So.alot of human activities is based on this geometry,and it does really work after all but only for our eyes , so there must be some mistakes but very little one that we can't observe,because they very tiny .So ,my question is , when will the euclidean geometry become useless ? I mean if it is making some little mistakes some where ,then there must be cases which the mistakes can no longer be hidden

Or I am just talking randomly and all this question is based on mistaken information, please do enlighten me.

Thanks in advance.

Based of some information that I recently learnt(which I don't know if they are right or wrong), I start asking myself this question about the euclidean geometry.

Ok, this geometry is basically founded on straight lines, and what I have learnt is there is no such a thing as a straight line in our planet.So.alot of human activities is based on this geometry,and it does really work after all but only for our eyes , so there must be some mistakes but very little one that we can't observe,because they very tiny .So ,my question is , when will the euclidean geometry become useless ? I mean if it is making some little mistakes some where ,then there must be cases which the mistakes can no longer be hidden

Or I am just talking randomly and all this question is based on mistaken information, please do enlighten me.

Thanks in advance.