other b y yourself in an afternoon". I arn sure there are people for whom this a r g u m e n t is valid. I am equally sure that, I am not one of them. I hope I am n o t the only one who could not learn P L / [ in a single afternoon. I confess t h a t I could not learn COBOL in one xfternoon. I did n o t learn A P L in one afternoon. I am still learning it. Of course, I am not supposed to t a k e t h a t "single afternoon" literally. However the implication seems to be t h a t learning another computer language is an activity to be carried out in isolation and in a s h o r t period of time relative to the time spent learning the first language. Surely most of us do n o t learn a second n a t u r a l language " b y ourselves in a single afternoon". My native language is English b u t it took several years to learn F r e n c h
/lp/association-for-computing-machinery/rectangular-to-polar-algorithm-with-phase-unwrapping-KPGx9AsUeh