Visible/Invisible

As we were doing this activity, I was thinking that visibility and invisibility is relative. For our students, some of the technology in the activity has existed their entire life. Their texting in class is the modern version of passing notes. I imagine when calculators replaced slide rules, there was controversy but they soon became the norm. I sometimes think of that when we are debating the value of different technology. I am not sure I am ready to hold class in Second Life, but I can accept that some people consider this the next logical step.