This new record isn't the We Are Scientists we were used to. The band has really grown and developed their sound. There are not many bratty pop songs compared to past releases, but rather many brooding, moody tracks... Much more complex as well.
At first the new sound was jarring, but over time it's really grown on me, and that's usually a sure sign that an album has legs. The melodic hooks are still there, the punchy drums remain, they're just steeped in a lot of additional sounds and riffs. Some tracks like 'Let's See It' still start with a strong catchy guitar run, but the vocals are more sing-songy.
There is more of a synthpop influence in the music as well. Something along the lines of a happier New Order with a bit of The Smiths in the melody. Tracks like 'Lethal Enforcer' are straight up new wave.
'Brain Thrust Mastery' is an excellent deviation from the mainstream, and a sign of even greater things to come.