The reason angry birds game play is confusing is that two different answers circulate, and both were correct at some point.
Where several approaches exist, the popular one is popular for being easy to explain rather than best. It is worth knowing which part of this the game actually enforces and which part is convention. The step people skip is almost always the one that makes the rest reliable. Where opinions differ, the disagreement is normally about priorities rather than facts.
The one-paragraph version
The reliable method takes slightly longer and works the first time, which is the better trade in almost every case.
What most guides get wrong here
Keep the first attempt simple and add refinements only after it works. Interfaces move between versions; the underlying logic almost never does. Community wikis are excellent for data and unreliable for timing, which is a useful distinction.
The second time takes a fraction as long, which makes the first attempt worth doing carefully. The advice that sounds too simple is usually the part that actually matters. The version number is the single most useful thing to note before following instructions.
Why it works
Following the steps for angry birds game play without understanding them works until something changes, and something will. Doing this without understanding it works fine until something changes, which it will. There is a fast way and a safe way, and they are not the same thing.
When to stop optimising
Most of the disagreement online here comes from people describing different versions. Most guides are written once and never revisited, which is worth remembering when one does not match. Nothing here depends on luck, though a bad first attempt can certainly feel that way.
Anything presented as a hidden trick for angry birds game play is normally a step a popular guide left out. There is a point where further refinement stops being worth the time, and it arrives early.
If your situation is slightly different
The useful part of angry birds game play is one sentence long; the rest is the reasoning behind it. The margin for error is wider than it appears, so a slightly imperfect attempt still counts. People searching angry birds game play are usually stuck at one specific moment rather than confused generally. Anything described as a known issue is worth checking before assuming the fault is yours.
Give the first attempt an honest try before deciding the method does not work. The useful answer is usually one sentence long, and everything else is the reasoning behind it. Checking the result immediately costs seconds and saves the most common kind of wasted time.
How to check it worked
Most pages on angry birds game play either assume too much or explain too little. The optimal approach and the reliable approach diverge more than people expect. Keep expectations proportional to the effort — this is a solved problem, not a research project.
- Note the step where your situation diverged from the description.
- Keep the original settings somewhere you can restore them from.
- Note your version number before starting.
- Stop and re-read if two steps seem to contradict each other.
- Check the known-issues list first.
- Read the whole sequence once before starting any of it.
Where the time normally disappears
- Making a permanent change to answer a question a reversible one would have settled.
- Optimising before the basic version has worked once.
- Spending an hour on preparation for a step that takes two minutes.
- Mixing instructions from two versions and getting neither.
Still unclear?
Do I need to finish the story first?
No, though a few things are simpler afterwards. Where progression matters, the relevant step says so.
Does the platform I play on change the answer?
The method is the same everywhere. Menu names and button prompts differ, and occasionally one platform gets a change a few days later than the rest.
Is there any risk to my save?
Not from the steps above. Backing up first is still sensible if the game makes it easy, purely because it costs nothing.
Does this apply to every version?
The steps target the current release. Older versions usually behave the same way, though menus may sit in different places.
What should I do if I get stuck partway?
Note the exact step, then re-check the one before it. Almost every report of being stuck traces back to a skipped precondition.
None of angry birds game play is difficult in isolation — the difficulty was only ever in the sequence.