• If somebody has a source explaining or can explain succinctly how 5% variation in power meter reading can compromise your training that would be appreciated please.

  • It's not the 5%. But inconsistency.
    If you only ever use one power meter, it doesn't matter what numbers it gives you, as long as it's consistent.

    If it sometimes is 1% down and others 3% up, then that variation leads you to have no clue what your doing in training.

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