Update concept-ml-pipelines.md

as discussed

Author: omartin2010

articles/machine-learning/concept-ml-pipelines.md

@@ -183,7 +183,7 @@ It's easy to become enthusiastic about reusing cached results, fine-grained cont
 
 * Heavy coupling between pipeline steps. If refactoring a dependent step frequently requires modifying the outputs of a previous step, it's likely that separate steps are currently more of a cost than a benefit. Another clue that steps are overly coupled is arguments to a step that are not data but flags to control processing. 
 
-* Prematurely optimizing compute resources. For instance, there are often several stages to data preparation and one can often see "Oh, here's a place where I could use an `MpiStep` for parallel-programming but here's a place where I could use a `PythonScriptStep` with a less-powerful compute target," and so forth. And maybe, in the long run, creating fine-grained steps like that might prove worthwhile, especially if there's a possibility to use cached results rather than always recalculating. But pipelines are not intended to be a substitute for the Python's native `multiprocessing` module. 
+* Prematurely optimizing compute resources. For instance, there are often several stages to data preparation and one can often see "Oh, here's a place where I could use an `MpiStep` for parallel-programming but here's a place where I could use a `PythonScriptStep` with a less-powerful compute target," and so forth. And maybe, in the long run, creating fine-grained steps like that might prove worthwhile, especially if there's a possibility to use cached results rather than always recalculating. But pipelines are not intended to be a substitute for Python's native `multiprocessing` module. 
 
 Until a project gets large or nears deployment, your pipelines should be coarser rather than fine-grained. If you think of your ML project as involving _stages_ and a pipeline as providing a complete workflow to move you through a particular stage, you're on the right path.