well it's not the only reason

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3030

Now brain power doesn't make up for a lack of ability, but if you want to know why he's on the team, and why he keeps getting his chances, this might be why.

It's because they think he will learn and develop.

If they had no faith in that he would be gone. They had plenty of OL candidates in camp. They have 3 more on the roster after the starters and then 2 more on IR.