Scary, ain't it. Put on your big girl panties. Russia launched with a cluster of engines for years.
Yes they have....not to mention, the rocket clusters are spread out much more than Space-X.
Space-X has there rockets clustered too close to the cum-line of the rocket.
2 or 3 rockets shutdown during the boost phase and bad things happen quicker.
Big girl panties might be useful for making it back to earth if all fails.
Indeed. The Saturn 1B had eight engines in the first stage.