What's the Concept of Merge Mining?

Dosh coin is kind of bemerged minelike coin. Most pools mind like coin and a few other merge minable coins, of scritmerge minl coins at the same time. The crazy thing is, right now, a like for esample, like qhen poole, is paying out 404 hundred % o the paper hash value. So because of dosh coin, it instaid. Previously it was like whatever, a hundred and 80% or something. Wish ust eight percent ness now atso actually 400%. That's pretty crazy.