Merge pull request #401 from alfredocarella/patch-1

Tiny typo fixes and improvement suggestion to code example in "Design Philosophy" doc

docs/blog/design-philosophy/index.qmd

@@ -139,7 +139,7 @@ The grid cells couldn't be styled with borders for presentation purposes, the va
 
 Over time, and this took about 10-15 years, tables-within-spreadsheets got a little easier on the eyes. By the early 1990s, Excel could paint borders on your tables, better typographical support was available, and the formatting of values was fully-featured (though, [wonky](https://www.cnet.com/tech/computing/prevent-excel-from-reformatting-two-numbers-to-a-date-and-month/)). Great! Problem solved, right? Not really.
 
-While Excel tables from the last three decades looked much better than 1980s-spreadsheet-borne tables, they could never hold a candle to the what was shown in the *Census Manual* (no matter how much of an Excel expert you became). Further to this, data analysis started to became a thing accomplished outside of Excel. One example of that is Python and its use inside Jupyter notebooks. We now have a bag of problematic scenarios
+While Excel tables from the last three decades looked much better than 1980s-spreadsheet-borne tables, they could never hold a candle to what was shown in the *Census Manual* (no matter how much of an Excel expert you became). Further to this, data analysis started to became a thing accomplished outside of Excel. One example of that is Python and its use inside Jupyter notebooks. We now have a bag of problematic scenarios
 
 - all Python: analyze data and generate tables all in Python (bad tables)
 - all Excel: analyze data and make tables in Excel (less flexible analysis)
@@ -215,16 +215,16 @@ The problem grows worse when values need to be conveyed as images or plots. If y
 # | code-fold: true
 # | code-summary: "Show the code"
 
-import great_tables
 from great_tables import GT, md
 from great_tables.data import illness
 import polars as pl
+from polars import selectors as cs
 
 illness_mini = (
     pl.from_pandas(illness)
     .head(10)
     .select(
-        "test", values=pl.concat_str(pl.exclude("test", "units"), separator=" ", ignore_nulls=True)
+        "test", values=pl.concat_str(cs.starts_with("day"), separator=" ", ignore_nulls=True)
     )
     .slice(1, 9)
 )
@@ -236,7 +236,7 @@ illness_mini = (
     .tab_stubhead(label=md("**Test**"))
     .cols_label(values=md("*Progression*"))
     .cols_align(align="center", columns="values")
-    .tab_source_note(source_note="Measurements from Day 3 through to Day 8.")
+    .tab_source_note(source_note="Measurements from Day 3 through Day 9.")
 )
 ```