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spec: The key difference between the two technologies is that while virtual reality creates a completely illusory environment , augmented reality supplements the real world - - through a head-mounted display , for example - - with information intended to make a particular task easier . This records the requests that arrive at your web server and contains some information about what happened when that request was served . The experimentalist however is less concerned with sample sizes and typically assumes relative homogeneity among subjects of whatever ability is required to perform a task , often relegating inter-subject differences into the category of error variance . A key difference between the Bible and say the Koran is that the Bible is not believed by christians to have been directly composed by God . If we use central differences rather than the forward difference of the Euler method or the backward difference of the backward Euler , we may obtain a second order method due to cancellation of the terms of O ( Dt2 ) . Only if the universe itself is expanding , as demonstrated by the balloon below . That report has been delivered to Sanchez and details will be released later , Kimmitt said . On the other side , in the " Glaubenslehre , " an inner difference in the types of faith , whereby the communions are divided , is maintained . That is one of the silliest things I have ever heard - and I have heard it since I was twelve - it 's an old arguement to justify oneself . This research also determines if a statistical difference exists between previously published research for 4D spacing as compared to results produced by this research for five alternate spacings : 8D , 7D , 6D , 5D , and 3D . Sharecropping can be a route to upward mobility for those with little capital , and some pickers ask coolers to become sharecroppers . The key difference between the decor at , say , Quaker Steak and Lube and the one at the Double Wide is that Quaker Steak pretends to be a garage , while Double Wide actually was one . In other words , the key difference between the old advertising model and the Google model is this : advertising on search engines allows companies to deliver context-based ads to people who have already expressed an interest ( by typing in a specific keyword ) in a particular topic . The hypothesis that differences in rates of maternal depression could be associated with group-level differences in the attainments of children , however , has not been directly tested , so it is necessary to go through each link in the causal chain . Each of the programs that have been selected as a high priority will have to develop a strategic plan that would be reviewed by an outside peer group . As was pre - viously explained in more detail on page 7 of the Audit Activities section , the key difference between the two cate - gories stems from how premium rates are calculated for each . THE PRESIDENT : You will have an opportunity after adjournment of seeing this document ; and you have been told already that you can refer , when your turn comes to present your defense , to the whole of any document .