Optimism is a subjective feeling or attitude — a mental state that cannot be captured, weighed, or quantified. Upside is an objective property of the situation itself, independent of anyone's mood.
A fact, not a feeling
This is a real, attested error pattern: treating upside as something a person feels. Professionals capture, weigh, assess, or quantify upside — they only feel optimism. Those are different verbs for a reason: one describes an internal state, the other describes an act of analysis directed at something outside the speaker.
"I'm feeling a lot of upside about this quarter."
This incorrectly treats upside as a feeling — as if it lived inside the speaker rather than in the situation being described. The verb "feeling" is the tell: upside isn't the kind of thing you feel, it's the kind of thing you assess.
"There's significant upside this quarter if renewals hold."
This states an objective, fact-based claim about the situation — about the quarter, its renewals, its numbers — not about the speaker's internal state at all.
Separating the two claims cleanly
The two ideas aren't actually incompatible; they just need to be kept as separate claims rather than merged into one mistaken sentence.
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Start learning for free →"I'm optimistic about this quarter, and the upside is real if renewals hold."
This correctly separates the speaker's subjective attitude (optimism) from the objective claim about the deal (upside) — two different sentences doing two different jobs, joined by "and" rather than collapsed into one.
Why the confusion is worth catching
Merging the two ideas into "I feel a lot of upside" quietly substitutes a mood for an analysis. A listener hearing that sentence can't tell whether the speaker has actually assessed the situation and found a real, sizeable gain, or is simply in a good mood about the quarter generally. Those are very different pieces of information, and a room making a decision needs to know which one it's getting.
Keeping the two separate also protects the speaker's own credibility. Someone who says "there's significant upside if renewals hold" is making a checkable, fact-based claim — one that can be verified against the actual renewal numbers later. Someone who says "I'm feeling a lot of upside" has made a claim about their own state of mind, which nobody can verify and which quietly excuses the speaker from being wrong later, since a feeling was never actually a prediction. Precise professionals keep the checkable claim (upside) and the personal disposition (optimism) visibly apart.
Practice scenarios
Practice separating upside from optimism in situations like:
- catching yourself about to say "I feel a lot of upside" and rephrasing it as a fact-based claim
- reporting a quarter's outlook while being honest about both the numbers and your own mood
- distinguishing a colleague's genuine analysis from their general good mood
- making a checkable claim about upside, separately from an unverifiable claim about optimism
Useful practice phrases:
- "I'm optimistic about this, and separately, there's real upside if..."
- "That's your optimism talking — what's the actual upside, based on the numbers?"
- "There's significant upside if [condition], independent of how anyone feels about it."
- "Let's not say we 'feel' upside — what does the analysis actually show?"
Optimism lives in you.
Upside lives in the situation — assess it, don't just feel it.
Lyra Practice helps advanced non-native English professionals learn the nuance of high-value workplace expressions and practice using them in realistic scenarios, so their English sounds natural, precise, and senior at work. Try Lyra Practice.