I want you to listen to the following poem and see if you can guess its subject:

I am your constant companion.
I am your greatest helper or your heaviest burden.
I will push you onward or drag you down to failure.
I am completely at your command.
Half the things you do, you might just as well turn over to me, and I will be able to do them quickly and correctly.
I am easily managed; you must merely be firm with me.
Show me exactly how you want something done,
and after a few lessons I will do it automatically

I am the servant of all great men,
and, alas, of all failures as well.
Those who are great, I have made great.
Those who are failures, I have made failures.

I am not a machine,
though I work with all the precision of a machine,
plus the intelligence of a man.
You may run me for prof…