I concur. Fortunately, the Drake equation gives us separate variables for "develops life" and "develops intelligent life". The value I used for f_i was somewha

I concur. Fortunately, the Drake equation gives us separate variables for "develops life" and "develops intelligent life". The value I used for f_i was somewhat lower than they gave, but I also thought that f_c was higher, so it worked out as a wash.