The gameplay was criticized, with most reviewers describing it as rudimentary, simple, and dated. Navigational sciences were highly developed, making use of a rudimentary sextant (known as a kamal). This gave the airplane some rudimentary and unreliable hydraulic control. This provided a very rudimentary GUI interface. The aircraft could carry unguided gravity bombs in a rudimentary strike capability. The depressor septi muscle may sometimes be absent or rudimentary. John Williams was the only colonist with any form of rudimentary medical skill. Leachim was able to convert digital memory to rudimentary verbal speech on pre-recorded computer discs. American rocketry pioneer Robert Goddard experimented with rudimentary gyroscopic systems. Insomnia becomes common, along with rudimentary telepathy. The series revealed his interest in breaking down representative forms into quick, rudimentary brushstrokes. He started by writing the title screen music and programming rudimentary character movements. This policy means Palestinian residents must subsist in very rudimentary living conditions. The unit had no display and rudimentary controls. Its dorsal and anal fins are confluent with the rudimentary caudal fin.