What a designer assumes when you do not tell them
A brief with gaps is not incomplete; it is complete with someone else's answers. What gets filled in by default, and what it costs.
A brief with gaps is not incomplete. It is complete, with someone else's answers filled in. Every question the brief does not answer, the designer answers by default, usually on the first day, usually without mentioning it, and usually in the way that makes the job smallest. Here is what gets assumed.
Technique defaults to the cheapest reading
"A video for the launch" becomes motion graphics on existing material unless the brief says otherwise, because that is the technique that needs the least from the client and carries the least risk. If what you had in mind was a shoot, the quote you receive is a quarter of what the job costs, and the conversation that follows is the one where the relationship gets its first dent. Say the technique, or say plainly that it is open and you want a recommendation.
Deliverable count defaults to one
One film, one site, one pack. A brief that mentions Reels, the Meta feed and YouTube in passing has described three aspect ratios and, with two languages, seven deliverables, but a designer reading it in a hurry prices the hero and treats the rest as exports. The count is the single most common cause of a quote being wrong, and it is arithmetic you can do in the brief.
Approval defaults to one round
Designers price for one round of amends after a first presentation, because that is what a decisive client needs. If four people have to approve and nobody has said whose view wins, the real number is three or four rounds, and the second round is the one where the schedule breaks. The number of approvers, with a named tiebreak, is worth more to the schedule than the deadline itself.
Copy defaults to "supplied"
The words. A designer assumes the words exist, or will arrive on time, because the alternative is to price a copywriter nobody asked for. If the copy is not written, every page that depends on it stops at the layout stage, and the launch date has already moved. Say whether the words exist and who is writing them.
Dates default to comfortable
A live date with no fixity attached is read as a target, and targets slip. If the date is a media booking or a shelf date, say so, and say it next to the technique, because the two decide each other: a 3D piece needs six weeks, a live-action shoot five, and a date inside that window is not a schedule, it is a problem that should be visible in the brief rather than discovered in week two.
What to do about it
Answer the questions the defaults are standing in for. Most of them are one tap. HereBriefly's three briefs are built around exactly these defaults: technique, count, approvals, copy and dates are asked directly, the specifications are derived from the answers, and the review screen lists every assumption the tool itself made so that none of them is silent.