This is the under side of a slab that's 2" thick and 50"x22". Gonna be a coffee table.

Is this crack something I NEED to deal with? I'm no expert and don't know if it's a structural thing. The slab is dry but in colder NorCal garage.

If I should do something, is epoxy or a bowtie better? I have epoxy here and never done a bowtie before. I'd order the Jasper bowtie router template and bit kit if I were to go that route.