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spec: Also , there are sequences that bookend each level that are almost identical from level to level , though they become increasingly difficult as you progress . It 's way too simple . If the only new information that enters your system is from your client , the remoting model as presented will work perfectly for you . For 18 crewmen evaluated with -50 mm Hg ( -67 x 102N / m2 ) LBNP and for nine tested with the passive stand ( both procedures for three of each group ) , heart rates were almost identical before flight , and postflight values for LBNP stress were slightly greater .