If I could only have one new thing from them it would definitely be core/port burning high-thrust SU BP engines.
It is the one thing SERIOUSLY lacking in this hobby now.

The thrust profiles of virtually all BP motors currently in existence STINK for booster motors.

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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL, if you have to ask what is "NORMAL" , you probably aren't !
Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, TURMOIL, FIASCOS, and HAVOC !