Earlier quoted context omitted.
Google explains that on the long run, like,30 daya of campaign, it will be proper on average. The explanationis, that Google will spend more when it sees possibilities to give more value in specific time. For example, there is a special day when people buy more than usual, but later they dont. So there is more budget spend on this special day, and less on others to make it even. So there is a reason behind it. But it…
There is no reason to that aside from Google making more money. They are not your friend.
For example keyword targetting gets broader.and broader. If you target.for keyword you want to target it precisely or with synonyms but you want to have control over it. But Google changed it lately to make it harder to narrow down keywords.
The result is you spend budget on bad keywords. And it seems like ok,if i get money from it overall.
But actually not only you loose budget but others too, because they need to bid higher.
They need.to bid higher for keywords you dont care about but they care. For Google its additional money.