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Assessing the Impact of Additional Evidence
Decide whether new info strengthens, weakens, or has no effect on the original argument.
01
Three-bucket framework
- **Strengthens**: closes a gap, supports the assumption, eliminates an alternative explanation.
- **Weakens**: opens a gap, contradicts a premise, supports an alternative explanation.
- **No effect**: about a different population, time, or scope; or restates known info.
Always ask: does this new fact actually touch the **link** between premises and conclusion? Decoration doesn't count.
02
Map onto the original
Жаттығу
Original: ‘New stadium will boost local economy.’ New evidence: ‘Stadium imports all workers from out of town.’ Effect?
Жауап пен түсініктемені көру
Жауап: Weakens — the local boost depends on local employment.
Imported workers spend their wages elsewhere, breaking the chain to the conclusion.