What did you do for a throttle cable before the drive by wire by Holley?

Question.... I was watching a you tube video of guys doing the hemi 6.4 into a Dart, they mentioned you cant use throttle with a cable on the standard manifold, had to be fly by wire?? Why would they think this am i missing something?
No idea what they were talking about. With as much good info that is on youtube, there's 1000 times more bad info. Or perhaps they didn't explain well enough. Maybe they are using a stock computer, which won't work with a cable throttle body. You will have to use a stand alone for a cable.