I just glanced through that document. Some thoughts (which may be stupid). > Devectorize expressions Why can't a compiler/whatever do this devectorisation for

I just glanced through that document. Some thoughts (which may be stupid). > Devectorize expressions Why can't a compiler/whatever do this devectorisation for us if it is faster - I see that there is a macro package for this why not do it as standard? > Write cache-friendly codes Well duh. > Identify opportunities to use BLAS Is this not what numpy does already? I suppose my real question about Julia is. Why? Why not put the effort into optimising numpy or making fortran a little more convenient to use rather than making a whole new special snowflake language just for one set of problems.