No big mystery about that, Im sure I remember those freshmen making the filters. I just havent got an electronics engineering background, and even at Phd level have only vaguely heard of Butterworth filters etc.
I didnt say the prestigious top engineering school like Imperial couldnt do it in ten years, just that they’re doing it now, which is just to say that the Hoodbhoy company aims to work at the cutting edge of technology. Im not sure what you’re actually disputing, that I dont currently work in this field?