 So we see this in Excel quite a lot. We've got a column that's a date, a column that's emphatically not a date, but let's say I had something that's one dash one, interpreted as a date, or one slash two. Again, it's interpreted as a date. Excel loves to interpret things as dates. Yes, it's quite funny, but it's also really easy to stop happening. So I know that when I'm putting data in this column, it's never gonna be a date. It's only ever going to be a string of data. So I'm going to come up here, go down and select text and there we go. That is now going to be said as text. If I do one dash one, no date, one slash two, no date. And if I do one dash two again, we can do the whole dragging down and it still tries to interpret it as a series. Now that's a view in putting data. If you want to do it as a one-off, an inverted comma usually does this, one dash one doesn't do anything, one slash two. Even if you want to write in formulas, we can do that as well. So not only is this like really easy, it's also kind of basic data entry stuff. You need to tell the computer kind of in advance what data to expect. So I'm expecting this to be a text string or a serial code or something like this. So it's going to be text. It's never gonna be a date. Maybe this is gonna be, it will be a date, in which case I need to do data validation on it. So I'm going to allow only dates between that and maybe no later than today, for instance. So now if I try to mess up by putting a future date in, it will reject it. So if you are doing this for serious work, this is worth considering. Someone else might be typing into this field. You need to restrict what it's going to accept in order to help them and stop someone else messing up your own data. And it's something that's quite, it's serious work for when you're running databases, running spreadsheets, running complex projects. And it is no more arduous or less important when you do claring variables and making sure that they work for computer codes. I'm sure we've all done this whole one plus one equals 11 thing when we use Python and JavaScript or similar because it concatenates instead of ads because it's accidentally interpreting the numbers as strings. That stuff happens in coding. It's gonna happen in Excel as well. That's why you need to make sure you know what data types you are using at any one point. So just because this is ubiquitous software and every business uses it for things and sometimes for things they shouldn't really use it for doesn't mean you shouldn't take it seriously and do it properly.