I very clearly grasp the concept of object permanence

Daddy went to San Diego for a few days this week for work meetings. The morning after he left, I woke up, looked to his side of the bed and saw that he wasn't there. I looked to the bathroom to see that the light was off. That means daddy wasn't in the bathroom, either. Then I looked at mommy, held my hands up and shrugged my shoulders and asked, "dada?" Mommy said daddy was in San Diego and would be back late the following night, after I'm already in bed. She said it's just the two of us for a couple of days. I smiled, touched mommy's shoulder and said "mum-mum." Mommy's so proud of her smart baby. She told me so.