> The point here is that things that are io-bound (esp. memory bound) in python may be cpu-bound in C++ or D, simply because you avoid doing all the indirection

> The point here is that things that are io-bound (esp. memory bound) in python may be cpu-bound in C++ or D, simply because you avoid doing all the indirections that higher level languages do. I think you mean the reverse: "things that are cpu-bound (esp. memory bound) in python may be io-bound in C++ or D".