Nope, fishing as a whole is relatively easy, as far as bite detection goes, and specifically to jigs, all the secondary indications of a bite are a backup to feeling the bite, which is usually a subtle tick or tap. Line movement, something feeling different in it's many forms, or anything else that may indicate a bite has already occurred, while certainly are useful and will result in more fish, are in no way an indication that the initial bite wasn't missed. One needs to work on both in order to maximize hooked fish.