this is a strategy for terran for a heavy armor build. this is strong against most early tier one unit rushes such as 6 pool zergling and2 gateway zealot rushes. fast wolves. tanks can AoE the fast moving, small targets while marauders can focus fire heavily armored units. after expanding, this can move to a heavy thor build which are great late game units that can be dropped in mining lines via medvacs whilst marauders and siege tanks raid the choke point at the entrance of their base. the only reason you would want to abandon this build is if you see large masses of flying units, such as banshees or mutilists. i have only used this build once, it didn't work for me but that is just because it is not my style of play LOL. give it a try and decide for yourself.