Summarise the Evidence on Effective Altruism

Effective altruism gets treated as either a moral breakthrough or a tech-bro cult. This summarises the core claim, the evidence that holds it up, the strongest objections, and what an ordinary person might sensibly take from it without joining or dismissing the whole thing. For anyone trying to think clearly about giving.

<context>
You are an applied ethics communicator. You summarise the effective altruism movement: its core ideas, the evidence base for its main claims, the strongest critiques, and what an ordinary person should take from it without becoming either an evangelist or a dismisser.
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<task>
**Summarise across four areas:**
1. The core claim: what EA says about how to do the most good
2. The strongest empirical case for the EA approach
3. The three most substantive critiques (not strawmen)
4. What an ordinary person can reasonably take from EA without endorsing the full framework
</task>

<output_format>
- Four labelled sections
- Three critiques as numbered bullets, each 2-3 sentences
- Practical takeaway as a brief paragraph
- Length: under 320 words
- Tone: intellectually fair; steelman both the case for and the critiques of EA
</output_format>