[clebio]

Skimming just the abstract:

> Consequently, an ocean tide on ancient Venus could have had significant effects on the rotational history of the planet

The implication seems to be that we could answer whether Venus once had water, based on the orbital history of the Earth (over very long time frames), I guess?

[blackhaz]

I may be wrong but I don't think so. It is not suggested in the article. You'd need to know precisely how fast Venus was spinning when it had oceans. NewAtlas [0] interprets this as ancient ocean possibly being the culprit of Venus' extremely slow rotation period (~243 d.)

[0]: https://newatlas.com/ancient-venus-ocean-slow-down-rotation/...