When you have a scatter plot, it will normally not allow you to input matrices, and only accepts lists. however, if you put in a variable, it does not check the type of the variable. If you store values into one-row matrices and give the names of the matrices for the scatter plot, the calculator accepts them as if they were normal values, and plots them normally. If you try to draw a line between them, as soon as you get the cursor even near one of the points, the OS crashes and the Nspire reboots.