>>>So, simply trust those that do that for life. Like you trust a CPU designer, a car maker or what ever.
>>
>>I am one of those that "did it for life" , well for 45 years, anyway. I started on "mainframes" using SAS and SPSS before there were PC's. I moved to FOX in the middle 90's because the pay was good and it was a good way to collect data. I still used SPSS to analyze the data.
>
>No BMDP ? Nothing from "Numerical Recipes" first in FORTRAN, then in C, as basis for own code ?
>
>curious
>thomas

Yes, Fortran and the IMSL