Do you think being asked to place one's right hand on the bible before testifying in court is an outdated method?

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So, I'm probably not the only one that's constantly watching crime shows that involve court scenes but it got me thinking. Is this an accurate method to use with say someone who's an athiest where to them it doesn't matter if they're being asked to swear the truth before god? Church and State are seperate so why haven't we found a better method, if this method is even effective at all with someone who isn't religious. Do you have any other methods in mind that might be more effective or methods that should replace this? Thoughts? 

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