Technology

Technology comes in four-stages: Agrarian Mechanisms, Industrial Machinery, Mad Science, and Ender (or "Alien") Technology.

Agrarian Mechanisms
Once you have managed to locate and mine redstone, you can start making most forms of redstone technology. Some tech requires materials collected at the industrial level, but most do not. This technology includes most vanilla machines (except the hopper or the piston), many of the "Project: Red" technology, and the "Expanded Redstone" technology.

Industrial Machinery
Once you have acquired Iron, you are capable of assembling complex machinery using RotaryCraft and its addons, as well as several other mods, such as Buildcraft, Railcraft, and EnderIO. These will allow you to begin automating your resource collection and production facilities greatly. Keep in mind that while this pack does include a great many mods for technology, the only mods that provide a power source are RotaryCraft and ReactorCraft; the power sources for all other mods have been disabled. Additionally, some mods' machines have been disabled in favor of RotaryCraft machinery, in order to take advantage of the mod's power mechanics.

Mad Science
Once you have managed enough power to collect the very bedrock from the world floor, you're in a new world of technology. Technology that really shouldn't work, but does. Mods like Applied Energistics, MineChem, RFTools, and Gendustry allow you to tweak the very nature of reality... or even create your own realities. These mods won't be accessible in full, however, until you have collected enough bedrock to assemble the machines for the mods.

Ender Technology
Endermen are Minecraft's version of aliens, and like the flying saucer pilots of other fiction, they have technology that's miles beyond even the mad science we just described: ways of making interdimensional fold space(ender storage), immortality (sync), and other almost magical powers(extra utlities, ender utilities). It is possible, however, to collect their essence, and make your very own ender tech out of it. In fact, with enough of the essence (and nuclear fuel), you can form a portal that allows you to visit their world. Which will be necessary, since the world's pre-existing portals no longer exist.