For example we see gravitation lensing effect even though the galaxy that is causing it is in front of what is being lensed from our perspective. So there may s

For example we see gravitation lensing effect even though the galaxy that is causing it is in front of what is being lensed from our perspective. So there may still be reasons to see if there are any patterns even if it's just from our perspective and also because it's the only one we have access to.