Google Blue Triangle Arrow

I noticed that Google now puts a little blue triangle / arrow next to the first entry of a search list. I wondered what good that was. Was it indicating the "best" find? I thought that is what the first position meant.

So I googled on "blue triangle arrow google" and found out. You can use your up and down arrow on your keyboard to move the triangle to another choice. Then you can press the enter key to go to that choice. So it is a way to choose a result without having to point and click.

In the snapshot attached, you can see where I've moved the arrow down one choice with my down arrow.

Now that I use a trackpad both on my laptop and at my desk, I don't mind pointing and clicking so much, because I just gesture and tap.