The reason it's a difficult concept, is because linda holds fish for people on a regular basis. She held a fish for me for like two weeks, because I ordered another fish from a seller who missed their shipping date.
I'm just going to copy this from my FB since I'm so mad I don't want to retype this:
Can I just take a second to rant about the post office here? THEY SUCK. I called to ask about my package and why it hasn't been delivered yet. I said I got my regular mail, but no package. Then they told me that no, I did not get my mail. I said yes, I did, because I pulled it out myself. Then they said no, I did not get it yet and that was yesterday's mail. I want to punch people. JUST GIVE ME MY FISH OMG.
If we are made of cells, then a scientist who studies cells is actually a group of cells studying themcells!