Shared ground
Ecclesiastes 9:11–12 presents an observation “under the sun”: real abilities (speed, strength, wisdom, understanding, skill) do not reliably produce the outcomes people expect. The text’s examples cover public competition (race), conflict (battle), basic provision (bread), prosperity (riches), and social standing (favor). The point is not that ability is worthless, but that it is not a lever that controls results.
The passage also claims a shared human limit: people cannot foresee “their time,” and sudden disaster can trap them. The fish-net and bird-snare images underline how quickly circumstances can change and how little warning a person may have.
Where interpretation differs
The main question is what “time and chance” means. Some readers take “chance” as genuinely unpredictable events from a human viewpoint—things that are not tied to merit and cannot be forecast. Others think the writer is describing unpredictability as experienced by humans while still assuming that God ultimately governs timing, so “chance” is not ultimate randomness, but what looks random to us.
Another smaller question is what “his time” highlights: for some it mainly means the moment of calamity (or death) that arrives without warning; for others it more broadly includes any critical turning point that changes a person’s prospects.
Why the disagreement exists
The Hebrew terms can describe timing/opportunity (time) and unforeseen happenings (“chance”), but the passage itself focuses on lived experience rather than explaining the hidden reasons behind events. Because Ecclesiastes often describes what life looks like “under the sun,” readers differ on how much the writer is making a claim about reality’s ultimate structure versus reporting the limits of human perspective.
What this passage clearly contributes
Explicitly, it teaches that outcomes are not distributed strictly according to qualification: the fast may lose, the strong may fall, the wise may lack bread, and the skilled may not receive favor. It also explicitly teaches that people do not know ahead of time when a harmful “time” will come, and that it can arrive suddenly.
By inference, the passage contributes a sober view of human control: planning, training, and insight matter, but they do not eliminate uncertainty or vulnerability. It also frames misfortune as something that can strike anyone, not only those who “deserve” it, pushing back against simplistic merit-based explanations of success and failure.