I used to debate a Commander Spock on CNet almost a decade or more ago. He claimed only Lotus 123 for OS/2 did ERR and IRR economic calculations for banks and

I used to debate a Commander Spock on CNet almost a decade or more ago. He claimed only Lotus 123 for OS/2 did ERR and IRR economic calculations for banks and the economy. That Windows Excel and,Windows Lotus 123 use ERR as the error function and does not have IRR to calculate those spreadsheets WK1 that OS/2 had. He claimed to be CIO of a European bank.